CiscoNetwork switchRead on cisco.comSearched on PriceQCisco announces the end-of-sale Cisco Business 350 (CBS350) Series Managed Switches (Select Models). The last day to order the affected product(s) is October 29, 2024.

CBS350 Managed 24-port GE, 4x1G SFP

Last updated Nov 1, 2026 · 2 entries in Page history

The Cisco CBS350-24T-4G is a rack-mountable managed switch of the Business 350 Series with 24 10/100/1000 ports and 4 Gigabit SFP. Its last day to order was October 29, 2024.

28x Gigabit Ethernet
Total system ports: 56.0Gbps
Switching capacity: 41.66mpps
Capacity, 64-byte packets: 2.63kg
Unit weight

Part number or model: CBS350-24T-4G
Type: Network switch
Catalog number: Not assigned yet

Cisco CBS350-24T-4G managed switch, the picture of this model on Cisco's Compare Models table

Timeline

Dates from the sources in References

31-MAY-2020Cisco Business 350 Series released
April 30, 2024End-of-life announced
October 29, 2024Last day to order
January 27, 2025Last ship date
October 29, 2025End of phone support
October 29, 2025End of software maintenance releases
October 29, 2025End of vulnerability and security support
October 31, 2029Last date of support

Specifications

145 fields, as the sources state them

Product Ordering

Order Product ID Number: CBS350-24T-4G-xx1
Description: 24 10/100/1000 ports 4 Gigabit SFP Rack-mountable1

History

Series Release Date: 31-MAY-20203
End-of-Life Announcement Date: April 30, 20242
End-of-Sale Date: HW: October 29, 20242
Last Ship Date: HW: January 27, 20252
End of Phone Support: HW: October 29, 20252
End of SW Maintenance Releases Date: HW: October 29, 20252
End of Vulnerability/Security Support: HW: October 29, 20252
Last Date of Support: HW: October 31, 20292

Compare Models

Power over Ethernet (PoE): Data only4
Stacking: N/A4
Power supply: Internal4

Performance

Switching capacity and forwarding rate: All switches are wire speed and nonblocking1
Capacity in Millions of Packets per Second (mpps) (64-byte packets): 41.661
Switching Capacity in Gigabits per Second (Gbps): 56.01

Layer 2 Switching

Spanning Tree Protocol: Standard 802.1d Spanning Tree support Fast convergence using 802.1w (Rapid Spanning Tree [RSTP]), enabled by default Multiple Spanning Tree instances using 802.1s (MSTP); 8 instances are supported Per-VLAN Spanning Tree Plus (PVST+) and Rapid PVST+ (RPVST+); 126 instances are supported1
Port grouping/link aggregation: Support for IEEE 802.3ad Link Aggregation Control Protocol (LACP) Up to 8 groups Up to 8 ports per group with 16 candidate ports for each (dynamic) 802.3ad link aggregation1
VLAN: Support for up to 4,094 VLANs simultaneously Port-based and 802.1Q tag-based VLANs; MAC-based VLAN; protocol-based VLAN; IP subnet-based VLAN Management VLAN Private VLAN with promiscuous, isolated, and community port Private VLAN Edge (PVE), also known as protected ports, with multiple uplinks Guest VLAN, unauthenticated VLAN Dynamic VLAN assignment via RADIUS server along with 802.1x client authentication CPE VLAN1
Voice VLAN: Voice traffic is automatically assigned to a voice-specific VLAN and treated with appropriate levels of QoS. Voice Services Discovery Protocol (VSDP) delivers network wide zero-touch deployment of voice endpoints and call control devices1
Multicast TV VLAN: Multicast TV VLAN allows the single multicast VLAN to be shared in the network while subscribers remain in separate VLANs. This feature is also known as Multicast VLAN Registration (MVR)1
VLAN Translation: Support for VLAN One-to-One Mapping. In VLAN One-to-One Mapping, on an edge interface customer VLANs (C-VLANs) are mapped to service provider VLANs (S-VLANs) and the original C-VLAN tags are replaced by the specified S-VLAN1
Q-in-Q: VLANs transparently cross a service provider network while isolating traffic among customers1
Selective Q-in-Q: Selective Q-in-Q is an enhancement to the basic Q-in-Q feature and provides, per edge interface, multiple mappings of different C-VLANs to separate S-VLANs Selective Q-in-Q also allows configuring of Ethertype (Tag Protocol Identifier [TPID]) of the S-VLAN tag Layer 2 protocol tunneling over Q-in-Q is also supported1
Generic VLAN Registration Protocol (GVRP)/Generic Attribute Registration Protocol (GARP): Generic VLAN Registration Protocol (GVRP) and Generic Attribute Registration Protocol (GARP) enable automatic propagation and configuration of VLANs in a bridged domain1
Unidirectional Link Detection (UDLD): UDLD monitors physical connection to detect unidirectional links caused by incorrect wiring or cable/port faults to prevent forwarding loops and black holing of traffic in switched networks1
Dynamic Host Configuration Protocol (DHCP) Relay at Layer 2: Relay of DHCP traffic to DHCP server in different VLAN; works with DHCP Option 821
Internet Group Management Protocol (IGMP) versions 1, 2, and 3 snooping: IGMP limits bandwidth-intensive multicast traffic to only the requesters; supports 2K multicast groups (source-specific multicasting is also supported)1
IGMP Querier: IGMP querier is used to support a Layer 2 multicast domain of snooping switches in the absence of a multicast router1
IGMP proxy: The IGMP proxy provides a mechanism for multicast forwarding based on IGMP membership information without the need for more complicated multicast routing protocols.1
Head-of-Line (HOL) blocking: HOL blocking prevention1
Loopback Detection: Loopback detection provides protection against loops by transmitting loop protocol packets out of ports on which loop protection has been enabled. It operates independently of STP1

Layer 3

IPv4 routing: Wirespeed routing of IPv4 packets Up to 990 static routes and up to 128 IP interfaces1
IPv6 routing: Wirespeed routing of IPv6 packets1
Layer 3 Interface: Configuration of Layer 3 interface on physical port, Link Aggregation (LAG), VLAN interface, or loopback interface1
Classless Interdomain Routing (CIDR): Support for classless interdomain routing1
RIP v2: Support for Routing Information Protocol version 2 for dynamic routing1
Policy-Based Routing (PBR): Flexible routing control to direct packets to different next hop based on IPv4 or IPv6 Access Control List (ACL)1
DHCP Server: Switch functions as an IPv4 DHCP server serving IP addresses for multiple DHCP pools/scopes Support for DHCP options1
DHCP relay at Layer 3: Relay of DHCP traffic across IP domains1
User Datagram Protocol (UDP) relay: Relay of broadcast information across Layer 3 domains for application discovery or relaying of Bootstrap Protocol (BOOTP)/DHCP packets1

Security

Secure Shell (SSH) Protocol: SSH is a secure replacement for Telnet traffic. Secure Copy Protocol (SCP) also uses SSH. SSH v1 and v2 are supported1
Secure Sockets Layer (SSL): SSL support: Encrypts all HTTPS traffic, allowing highly secure access to the browser-based management GUI in the switch1
IEEE 802.1X (Authenticator role): 802.1X: Remote Authentication Dial-In User Service (RADIUS) authentication and accounting, MD5 hash; guest VLAN; unauthenticated VLAN, single/multiple host mode and single/multiple sessions Supports time-based 802.1X; dynamic VLAN assignment; MAC authentication1
IEEE 802.1X supplicant: A switch can be configured to act as a supplicant to another switch. This enables extended secure access in areas outside the wiring closet (such as conference rooms)1
Web-based authentication: Web-based authentication provides network admission control through web browser to any host devices and operating systems1
STP Bridge Protocol Data Unit (BPDU) Guard: A security mechanism to protect the network from invalid configurations. A port enabled for BPDU Guard is shut down if a BPDU message is received on that port. This avoids accidental topology loops1
STP Root Guard: This prevents edge devices not in the network administrator’s control from becoming Spanning Tree Protocol root nodes1
STP loopback guard: Provides additional protection against Layer 2 forwarding loops (STP loops)1
DHCP snooping: Filters out DHCP messages with unregistered IP addresses and/or from unexpected or untrusted interfaces. This prevents rogue devices from behaving as DHCP Servers.1
IP Source Guard (IPSG): When IP Source Guard is enabled at a port, the switch filters out IP packets received from the port if the source IP addresses of the packets have not been statically configured or dynamically learned from DHCP snooping. This prevents IP address spoofing.1
Dynamic ARP Inspection (DAI): The switch discards ARP packets from a port if there are no static or dynamic IP/MAC bindings or if there is a discrepancy between the source or destination addresses in the ARP packet. This prevents man-in-the-middle attacks.1
IP/MAC/Port Binding (IPMB): The preceding features (DHCP Snooping, IP Source Guard, and Dynamic ARP Inspection) work together to prevent DOS attacks in the network, thereby increasing network availability1
Secure Core Technology (SCT): Makes sure that the switch will receive and process management and protocol traffic no matter how much traffic is received1
Secure Sensitive Data (SSD): A mechanism to manage sensitive data (such as passwords, keys, and so on) securely on the switch, populating this data to other devices, and secure auto config. Access to view the sensitive data as plaintext or encrypted is provided according to the user-configured access level and the access method of the user.1
Trustworthy systems: Trustworthy systems provide a highly secure foundation for Cisco products Run-time defenses (Executable Space Protection [X-Space], Address Space Layout Randomization [ASLR], Built-In Object Size Checking [BOSC])1
Private VLAN: Private VLAN provides security and isolation between switch ports, which helps ensure that users cannot snoop on other users’ traffic; supports multiple uplinks1
Layer 2 isolation Private VLAN Edge (PVE): PVE (also known as protected ports) provides Layer 2 isolation between devices in the same VLAN, supports multiple uplinks1
Port security: Ability to lock source MAC addresses to ports and limits the number of learned MAC addresses1
RADIUS/TACACS+: Supports RADIUS and TACACS authentication. Switch functions as a client1
RADIUS accounting: The RADIUS accounting functions allow data to be sent at the start and end of services, indicating the amount of resources (such as time, packets, bytes, and so on) used during the session1
Storm control: Broadcast, multicast, and unknown unicast1
DoS prevention: Denial-of-Service (DOS) attack prevention1
Multiple user privilege levels in CLI: Level 1, 7, and 15 privilege levels1
ACLs: Support for up to 1,024 rules Drop or rate limit based on source and destination MAC, VLAN ID, IPv4 or IPv6 address, IPv6 flow label, protocol, port, Differentiated Services Code Point (DSCP)/IP precedence, Transmission Control Protocol/User Datagram Protocol (TCP/UDP) source and destination ports, 802.1p priority, Ethernet type, Internet Control Message Protocol (ICMP) packets, IGMP packets, TCP flag; ACL can be applied on both ingress and egress sides Time-based ACLs supported1

Quality of Service

Priority levels: 8 hardware queues1
Scheduling: Strict priority and Weighted Round-Robin (WRR)1
Class of service: Port based; 802.1p VLAN priority-based; IPv4/v6 IP precedence/Type of Service (ToS)/DSCP-based; Differentiated Services (DiffServ); classification and remarking ACLs, trusted QoS Queue assignment based on DSCP and class of service (802.1p/CoS)1
Rate limiting: Ingress policer; egress shaping and rate control; per VLAN, per port, and flow based; 2R3C policing1
Congestion avoidance: A TCP congestion avoidance algorithm is required to minimize and prevent global TCP loss synchronization1
iSCSI traffic optimization: A mechanism for giving priority to iSCSI traffic over other types of traffic1

Standards

Standards: IEEE 802.3 10BASE-T Ethernet, IEEE 802.3u 100BASE-TX Fast Ethernet, IEEE 802.3ab 1000BASE-T Gigabit Ethernet, IEEE 802.3ad Link Aggregation Control Protocol, IEEE 802.3z Gigabit Ethernet, IEEE 802.3ae 10 Gbit/s Ethernet over fiber for LAN, IEEE 802.3an 10GBase-T 10 Gbit/s Ethernet over copper twisted pair cable, IEEE 802.3x Flow Control, IEEE 802.1D (STP, GARP, and GVRP), IEEE 802.1Q/p VLAN, IEEE 802.1w Rapid STP, IEEE 802.1s Multiple STP, IEEE 802.1X Port Access Authentication, IEEE 802.3af, IEEE 802.3at, IEEE 802.1AB Link Layer Discovery Protocol, IEEE 802.3az Energy Efficient Ethernet, RFC 768, RFC 783, RFC 791, RFC 792, RFC 793, RFC 813, RFC 826, RFC 879, RFC 896, RFC 854, RFC 855, RFC 856, RFC 858, RFC 894, RFC 919, RFC 920, RFC 922, RFC 950, RFC 951, RFC 1042, RFC 1071, RFC 1123, RFC 1141, RFC 1155, RFC 1157, RFC 1213, RFC 1215, RFC 1286, RFC 1350, RFC 1442, RFC 1451, RFC 1493, RFC 1533, RFC 1541, RFC 1542, RFC 1573, RFC 1624, RFC 1643, RFC 1700, RFC 1757, RFC 1867, RFC 1907, RFC 2011, RFC 2012, RFC 2013, RFC 2030, RFC 2131, RFC 2132, RFC 2233, RFC 2576, RFC 2616, RFC 2618, RFC 2665, RFC 2666, RFC 2674, RFC 2737, RFC 2819, RFC 2863, RFC 3164, RFC 3176, RFC 3411, RFC 3412, RFC 3413, RFC 3414, RFC 3415, RFC 3416, RFC 43301

IPv6

IPv6: IPv6 host mode; IPv6 over Ethernet; Dual IPv6/IPv4 stack IPv6 neighbor and router discovery (ND); IPv6 stateless address autoconfiguration; Path Maximum Transmission Unit (MTU) discovery Duplicate Address Detection (DAD); ICMP version 6 DHCPv6 stateful client IPv6 over IPv4 network with Intrasite Automatic Tunnel Addressing Protocol (ISATAP) tunnel support USGv6 and IPv6 Gold Logo certified1
IPv6 QoS: Prioritize IPv6 packets in hardware1
IPv6 ACL: Drop or rate limit IPv6 packets in hardware1
IPv6 First Hop Security: RA guard ND inspection DHCPv6 guard Neighbor binding table (snooping and static entries) Neighbor binding integrity check1
Multicast Listener Discovery (MLD v1/2) snooping: Deliver IPv6 multicast packets only to the required receivers1
MLD proxy: The MLD proxy provides a mechanism for multicast forwarding based on MLD membership information without the need for more complicated multicast routing protocols.1
IPv6 applications: Web/SSL, Telnet server/SSH, ping, traceroute, Simple Network Time Protocol (SNTP), Trivial File Transfer Protocol (TFTP), SNMP, RADIUS, syslog, Domain Name System (DNS) client, Telnet Client, DHCP Client, DHCP Autoconfig, IPv6 DHCP Relay, Terminal Access Controller Access Control System Plus (TACACS+)1
IPv6 RFCs supported: RFC 4443 (which obsoletes RFC2463): ICMP version 6 RFC 4291 (which obsoletes RFC 3513): IPv6 address architecture RFC 4291: IPv6 addressing architecture RFC 2460: IPv6 specification RFC 4861 (which obsoletes RFC 2461): neighbor discovery for IPv6 RFC 4862 (which obsoletes RFC 2462): IPv6 stateless address autoconfiguration RFC 1981: path MTU discovery RFC 4007: IPv6 scoped address architecture RFC 3484: default address selection mechanism RFC 5214 (which obsoletes RFC 4214): ISATAP tunneling RFC 4293: MIB IPv6: textual conventions and general group RFC 3595: textual conventions for IPv6 flow label1

Management

Cisco Business Dashboard: Support for embedded probe for Cisco Business Dashboard running on the switch. Eliminates the need to set up a separate hardware or virtual machine for the Cisco Business Dashboard Probe on site.1
Cisco Business mobile app: Mobile app for Cisco Business Switch and Wireless products. Helps to set up a local network in minutes and provide easy management at your fingertips.1
Cisco Network Plug and Play (PnP) agent: The Cisco Network Plug and Play solution provides a simple, secure, unified, and integrated offering to ease new branch or campus device rollouts or for provisioning updates to an existing network. The solution provides a unified approach to provision Cisco routers, switches, and wireless devices with a near-zero-touch deployment experience Supports Cisco PnP Connect1
Web user interface: Built-in switch configuration utility for easy browser-based device configuration (HTTP/HTTPS). Supports simple and advanced mode, configuration, wizards, customizable dashboard, system maintenance, monitoring, online help, and universal search1
SNMP: SNMP versions 1, 2c, and 3 with support for traps, and SNMP version 3 User-based Security Model (USM)1
Standard Management Information Bases (MIBs): lldp-MIB lldpextdot1-MIB lldpextdot3-MIB lldpextmed-MIB rfc2674-MIB rfc2575-MIB rfc2573-MIB rfc2233-MIB rfc2013-MIB rfc2012-MIB rfc2011-MIB RFC-1212 RFC-1215 SNMPv2-CONF SNMPv2-TC p-bridge-MIB q-bridge-MIB rfc1389-MIB rfc1493-MIB rfc1611-MIB rfc1612-MIB rfc1850-MIB rfc1907-MIB rfc2571-MIB rfc2572-MIB rfc2574-MIB rfc2576-MIB rfc2613-MIB rfc2665-MIB rfc2668-MIB rfc2737-MIB rfc2925-MIB rfc3621-MIB rfc4668-MIB rfc4670-MIB trunk-MIB tunnel-MIB udp-MIB draft-ietf-bridge-8021x-MIB draft-ietf-bridge-rstpmib-04-MIB draft-ietf-hubmib-etherif-mib-v3-00-MIB draft-ietf-syslog-device-MIB ianaaddrfamnumbers-MIB ianaifty-MIB ianaprot-MIB inet-address-MIB ip-forward-MIB ip-MIB RFC1155-SMI RFC1213-MIB SNMPv2-MIB SNMPv2-SMI SNMPv2-TM RMON-MIB rfc1724-MIB dcb-raj-DCBX-MIB-1108-MIB rfc1213-MIB rfc1757-MIB1
Private MIBs: CISCOSB-lldp-MIB CISCOSB-brgmulticast-MIB CISCOSB-bridgemibobjects-MIB CISCOSB-bonjour-MIB CISCOSB-dhcpcl-MIB CISCOSB-MIB CISCOSB-wrandomtaildrop-MIB CISCOSB-traceroute-MIB CISCOSB-telnet-MIB CISCOSB-stormctrl-MIB CISCOSB-ssh-MIB CISCOSB-socket-MIB CISCOSB-sntp-MIB CISCOSB-smon-MIB CISCOSB-phy-MIB CISCOSB-multisessionterminal-MIB CISCOSB-mri-MIB CISCOSB-jumboframes-MIB CISCOSB-gvrp-MIB CISCOSB-endofmib-MIB CISCOSB-dot1x-MIB CISCOSB-deviceparams-MIB CISCOSB-cli-MIB CISCOSB-cdb-MIB CISCOSB-brgmacswitch-MIB CISCOSB-3sw2swtables-MIB CISCOSB-smartPorts-MIB CISCOSB-tbi-MIB CISCOSB-macbaseprio-MIB CISCOSB-policy-MIB CISCOSB-env_mib CISCOSB-sensor-MIB CISCOSB-aaa-MIB CISCOSB-application-MIB CISCOSB-bridgesecurity-MIB CISCOSB-copy-MIB CISCOSB-CpuCounters-MIB CISCOSB-Custom1BonjourService-MIB CISCOSB‑dhcp-MIB CISCOSB-dlf-MIB CISCOSB-dnscl-MIB CISCOSB-embweb-MIB CISCOSB-fft-MIB CISCOSB-file-MIB CISCOSB-greeneth-MIB CISCOSB-interfaces-MIB CISCOSB-interfaces_recovery-MIB CISCOSB-ip-MIB CISCOSB-iprouter-MIB CISCOSB-ipv6-MIB CISCOSB-mnginf-MIB CISCOSB-lcli-MIB CISCOSB-localization-MIB CISCOSB-mcmngr-MIB CISCOSB-mng-MIB CISCOSB-physdescription-MIB CISCOSB-PoE-MIB CISCOSB-protectedport-MIB CISCOSB-rmon-MIB CISCOSB-rs232-MIB CISCOSB-SecuritySuite-MIB CISCOSB-snmp-MIB CISCOSB-specialbpdu-MIB CISCOSB-banner-MIB CISCOSB-syslog-MIB CISCOSB-TcpSession-MIB CISCOSB-traps-MIB CISCOSB-trunk-MIB CISCOSB-tuning-MIB CISCOSB-tunnel-MIB CISCOSB-udp-MIB CISCOSB-vlan-MIB CISCOSB-ipstdacl-MIB CISCOSB-eee-MIB CISCOSB-ssl-MIB CISCOSB-qosclimib-MIB CISCOSB-digitalkeymanage-MIB CISCOSB-tbp-MIB CISCOSMB-MIB CISCOSB-secsd-MIB CISCOSB-draft-ietf-entmib-sensor-MIB CISCOSB-draft-ietf-syslog-device-MIB CISCOSB-rfc2925-MIB CISCO-SMI-MIB CISCOSB-DebugCapabilities-MIB CISCOSB-CDP-MIB CISCOSB-vlanVoice-MIB CISCOSB-EVENTS-MIB CISCOSB-sysmng-MIB CISCOSB-sct-MIB CISCO-TC-MIB CISCO-VTP-MIB CISCO-CDP-MIB1
Remote Monitoring (RMON): Embedded RMON software agent supports 4 RMON groups (history, statistics, alarms, and events) for enhanced traffic management, monitoring, and analysis1
IPv4 and IPv6 dual stack: Coexistence of both protocol stacks to ease migration1
Firmware upgrade: Web browser upgrade (HTTP/HTTPS) and TFTP and upgrade over SCP running over SSH Dual images for resilient firmware upgrades1
Port mirroring: Traffic on a port can be mirrored to another port for analysis with a network analyzer or RMON probe. Up to 8 source ports can be mirrored to one destination port.1
VLAN mirroring: Traffic from a VLAN can be mirrored to a port for analysis with a network analyzer or RMON probe. Up to 8 source VLANs can be mirrored to one destination port.1
Flow-based redirection and mirroring: Redirect or mirror traffic to a destination port or mirroring session based on flow1
Remote Switch Port Analyzer (RSPAN): Traffic can be mirrored across Layer 2 domain to a remote port on a different switch for easier troubleshooting1
sFlow agent: Switch can export sFlow sample to external collectors. sFlow provides visibility into network traffic down to flow level1
DHCP (options 12, 59, 60, 66, 67, 82, 125, 129, and 150): DHCP options facilitate tighter control from a central point (DHCP server) to obtain IP address, autoconfiguration (with configuration and image file download), DHCP relay, and hostname1
Secure Copy (SCP): Securely transfer files to and from the switch1
Autoconfiguration with Secure Copy (SCP) file download: Enables secure mass deployment with protection of sensitive data1
Text-editable config files: Config files can be edited with a text editor and downloaded to another switch, facilitating easier mass deployment1
Smartports: Simplified configuration of QoS and security capabilities1
Auto Smartports: Applies the intelligence delivered through the Smartport roles and applies it automatically to the port based on the devices discovered over Cisco Discovery Protocol or LLDP-MED. This facilitates zero-touch deployments1
Textview CLI: Scriptable command-line interface. A full CLI as well as a menu-based CLI is supported. User privilege levels 1, 7, and 15 are supported for the CLI1
Localization: Localization of GUI and documentation into multiple languages1
Login banner: Configurable multiple banners for web as well as CLI1
Other management: Traceroute; single IP management; HTTP/HTTPS; SSH; RADIUS; port mirroring; TFTP upgrade; DHCP client; BOOTP; SNTP; Xmodem upgrade; cable diagnostics; ping; syslog; Telnet client (SSH secure support); automatic time settings from Management Station1

Green (power efficiency)

Energy Detect: Automatically turns power off on RJ-45 port when detecting link down. Active mode is resumed without loss of any packets when the switch detects the link up1
Cable length detection: Adjusts the signal strength based on the cable length. Reduces the power consumption for shorter cables.1
EEE Compliant (802.3az): Supports IEEE 802.3az on all copper Gigabit Ethernet ports1
Disable port LEDs: LEDs can be manually turned off to save on energy1
Time-based port operation: Link up or down based on user-defined schedule (when the port is administratively up)1

General

Jumbo frames: Frame sizes up to 9K bytes. The default MTU is 2K bytes1
MAC table: 16K addresses1

Discovery

Bonjour: The switch advertises itself using the Bonjour protocol1
Link Layer Discovery Protocol (LLDP) (802.1ab) with LLDP‑MED extensions: LLDP allows the switch to advertise its identification, configuration, and capabilities to neighboring devices that store the data in a MIB. LLDP-MED is an enhancement to LLDP that adds the extensions needed for IP phones1
Cisco Discovery Protocol: The switch advertises itself using the Cisco Discovery Protocol. It also learns the connected device and its characteristics via Cisco Discovery Protocol1

Hardware

Power consumption (worst case): System Power Consumption: 110V=25.91W 220V=25.63W1
Power consumption (worst case): Power Consumption (with PoE): N/A1
Power consumption (worst case): Heat Dissipation (BTU/hr): 89.131
Ports: Total System Ports: 28 x Gigabit Ethernet1
Ports: RJ-45 Ports: 24 x Gigabit Ethernet1
Ports: Combo Ports (RJ45 + Small form-factor pluggable [SFP]): 4 x SFP1
Console port: Cisco standard RJ45 console port1
USB slot: USB Type-A slot on the front panel of the switch for easy file and image management1
Buttons: Reset button1
Cabling type: Unshielded Twisted Pair (UTP) Category 5e or better for 1000BASE-T1
LEDs: System, Link/Act, PoE, Speed1
Flash: 256 MB1
CPU: 800 MHz ARM1
DRAM: 512 MB1
Packet buffer: All numbers are aggregate across all ports as the buffers are dynamically shared: CBS350-24T-4G: 1.5 MB1
Supported SFP modules: SKU | Media | Speed | Maximum Distance MGBSX1 | Multimode fiber | 1000 Mbps | 500 m MGBLX1 | Single-mode fiber | 1000 Mbps | 10 km MGBLH1 | Single-mode fiber | 1000 Mbps | 40 km MGBT1 | UTP cat 5e | 1000 Mbps | 100 m GLC-SX-MMD | Multimode fiber | 1000 Mbps | 550 m GLC-LH-SMD | Single-mode fiber | 1000 Mbps | 10 km GLC-BX-U | Single-mode fiber | 1000 Mbps | 10 km GLC-BX-D | Single-mode fiber | 1000 Mbps | 10 km GLC-TE | UTP cat 5e | 1000 Mbps | 100 m SFP-H10GB-CU1M | Copper coax | 10 Gig | 1 m SFP-H10GB-CU3M | Copper coax | 10 Gig | 3 m SFP-H10GB-CU5M | Copper coax | 10 Gig | 5 m SFP-10G-SR | Multimode fiber | 10 Gig | 26 m - 400 m SFP-10G-LR | Single-mode fiber | 10 Gig | 10 km SFP-10G-SR-S | Multimode fiber | 10 Gig | 26 m - 400 m SFP-10G-LR-S | Single-mode fiber | 10 Gig | 10 km1

Environmental

Unit dimensions (W x D x H): 445 x 240 x 44 mm (17.5 x 9.45 x 1.73 in)1
Unit weight: 2.63 kg (5.80 lb)1
Power: 100-240V 50-60 Hz, internal, universal1
Certification: UL (UL 62368), CSA (CSA 22.2), CE mark, FCC Part 15 (CFR 47) Class A1
Operating temperature: 23° to 122°F (-5° to 50°C)1
Storage temperature: -13° to 158°F (-25° to 70°C)1
Operating humidity: 10% to 90%, relative, noncondensing1
Storage humidity: 10% to 90%, relative, noncondensing1
Acoustic noise and Mean Time Between Failure (MTBF): FAN (Number): Fanless1
Acoustic noise and Mean Time Between Failure (MTBF): Acoustic Noise: N/A1
Acoustic noise and Mean Time Between Failure (MTBF): MTBF at 25°C (hours): 2,026,7931
Warranty: Limited lifetime with next business day advance replacement (where available)1

Package Contents

Package Contents: Cisco Business 350 Series Managed Switch Power Cord (Power adapter for select 8-port and 16-port SKUs) Mounting Kit Quick Start Guide1

Minimum Requirements

Minimum Requirements: Web browser: Chrome, Firefox, Edge, Safari Category 5e Ethernet network cable TCP/IP, network adapter, and network operating system (such as Microsoft Windows, Linux, or Mac OS X) installed1

Sources: cisco.com, Data sheet updated May 25, 2024, the specifications table and the ordering table, read Nov 1, 2026 UTC; cisco.com, Series header and Documentation, read Nov 1, 2026 UTC; cisco.com, EOL15389 - Amended, Overview, Table 1 and Table 2, read Nov 1, 2026 UTC; cisco.com, Compare Models table, column CBS350-24T-4G, read Nov 1, 2026 UTC.

Size and weight

Inches and pounds, millimetres and kilograms

The product

What	Inches and pounds	Millimetres and kilograms
Dimensions	W17.5×D9.45×H1.73 in	W445×D240×H44 mm
Weight	5.80 lb	2.63 kg

Figures in black are the maker’s. Figures in grey are converted by the wiki (1 in = 25.4 mm, 1 lb = 0.45359237 kg).

Compare with

2 of the same family on the wiki

Compare all 3 together

Documents

3 linked, none copied here

References

4 sources, each with the day it was read

cisco.com, Data sheet updated May 25, 2024, the specifications table and the ordering table, read Nov 1, 2026 UTC. Supports 134 specifications, the related products, the documents
cisco.com, EOL15389 - Amended, Overview, Table 1 and Table 2, read Nov 1, 2026 UTC. Supports 7 specifications, the related products, that it is no longer sold
cisco.com, Series header and Documentation, read Nov 1, 2026 UTC. Supports 1 specification, the documents
cisco.com, Compare Models table, column CBS350-24T-4G, read Nov 1, 2026 UTC. Supports 3 specifications

Page history

Every read and every change to this page, newest first

Nov 1, 2026, 04:34 UTCPage created from the maker’s page, among the products buyers searched on PriceQ. Product type proposed. Descriptions written at three lengths from the specifications.Claude Opus (AI agent) · Not reviewed yet
Nov 1, 2026, 03:55 UTCRead on cisco.com: Data sheet updated May 25, 2024, the specifications table and the ordering table; EOL15389 - Amended, Overview, Table 1 and Table 2; Series header and Documentation; Compare Models table, column CBS350-24T-4G.Claude Opus (AI agent) · Not reviewed yet

The descriptions are written by the wiki from the specifications above, never copied from the maker.

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CBS350-24T-4GCBS350 Managed 24-port GE, 4x1G SFP