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CBS350-48T-4X-UK
Cisco CBS350-48T-4X-UK Business 350 48-Port Gigabit Switch,...
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CBS350-48T-4X-UK is a managed Layer 2+ access switch with 48 Gigabit copper ports and four fixed 10G SFP+ connections for aggregation links. The non-PoE configuration connects computers, printers and other independently powered devices without supplying endpoint power. Its 1U rack-mount chassis places the Cisco Business 350 Series in small-business wiring closets requiring copper access and faster fiber connections. The discontinued CBS350-48P-4X-UK adds PoE+ with a shared 370W budget for retained installations requiring powered access ports. Within the Cisco Business portfolio, this model provides configurable switching rather than unmanaged connectivity, with fixed interfaces instead of an uplink expansion bay.
CBS350-48T-4X-UK price is is available on request. Get immediate quote.
Request bulk order quote for CBS350-48T-4X-UK for additional pricing. Browse the full Cisco CBS350 Business Switches series or explore all Cisco products.
176 Gbps switching capacity supports nonblocking traffic across the available interfaces. 130.94 Mpps forwarding defines the packet-handling ceiling for 64-byte traffic. 990 static routes bound manually configured next-hop entries, while RIPv2 and PBR provide dynamic and policy-based routing options; 128 IP interfaces support the addressing plan. CBS350-48T-4X-UK provides 512 MB of DRAM for operation and 256 MB of flash for software storage. A dynamically shared 3 MB packet buffer serves traffic across the ports, while the MAC table accommodates 16000 entries. STP/RSTP/MSTP provide loop prevention, and LACP supports link aggregation. Administrators can configure the device through HTTP/HTTPS, the console CLI, SSH or Telnet, with SNMP available for network-management integration. Support for 4094 simultaneous VLANs permits separate network segments within the switching configuration. 51.01W maximum power consumption supplies the worst-case figure for electrical provisioning, excluding independently powered endpoints.
CBS350-48T-4X-UK is available new sealed with up to a 3-year extended warranty or certified refurbished with up to a 1-year warranty; Cisco's separate limited lifetime hardware warranty ends October 31, 2029. Refurbished units are inspected and bench-tested, with optics bay recognition checked, firmware verified and configurations wiped to factory default. Specify the condition, quantity, connection hardware and destination on the purchase order; 30-day returns cover every condition, terms apply. For enterprise and volume orders, ORM accepts POs, offers Net-30 for government, and provides RMA with advance replacement through UK, EU, US and MEA regional stock and RMA coverage.
| Key Specs | Key Spec Values |
|---|---|
Port Configuration | 48 x 1G / 4 x 10G SFP+ |
Stacking | Hardware stacking / 4 members |
Max Power Draw | 51.01W |
Replaces | SG350X-48-K9-UK EOS 2021-10-30 / SG550X-48-K9-UK EOS 2022-07-30 |
Lifecycle Status | End of sale October 29, 2024 |
Replacement PID | C1300-48T-4X |
When replacing a discontinued SG350X-48-K9-UK or SG550X-48-K9-UK, the purchase starts with an existing configuration rather than a new feature list. Map VLANs, access policies and interface assignments to the replacement hardware, then specify the required regional variant and condition before issuing the purchase order.
For a multi-site rollout managed through Cisco Business Dashboard, the embedded probe avoids ordering a separate probe appliance for each location. Establish the management workflow and identify who owns device discovery and monitoring before purchase, then specify the switch quantities and destination details for every site.
When staging a configuration change before production, dual software images provide a separate image-management option during validation. The front-panel USB Type-A interface supports file and image handling without making the staging process dependent on a remote transfer path. Include configuration backup and image verification in the acceptance checklist.
Powered phones or access points
CBS350-48T-4X-UK supplies data connectivity without PoE output. For endpoints requiring switch-delivered power, specify the current C1300-48P-4X migration option rather than this non-PoE model.
Continued software and security fixes
Software maintenance and vulnerability/security support ended October 29, 2025. For new deployments requiring an ongoing software-fix path, use the current replacement C1300-48T-4X instead.
Mon–Fri: [09:00-16:00]
Avg. response under 30 mins
| CBS350-48T-4X-UK |  CBS350-24T-4G-NA |  CBS350-24T-4X-NA |  CBS350-12NP-4X-EU |  CBS350-24MGP-4X | |
|---|---|---|---|---|---|
| Depth | 288 mm | 240 mm | 240 mm | 257 mm | 257 mm |
| Ethernet Technology | Gigabit Ethernet | Gigabit Ethernet | Gigabit Ethernet | Multi-Gigabit (2.5G/5G) | Multi-Gigabit (2.5G/5G) |
| Flash Memory | 256 MB | 256 MB | 256 MB | 256 MB | 256 MB |
| Form Factor | Rack-Mount 1U | Rack-Mount 1U | Rack-Mount 1U | Rack-Mount 1U | Rack-Mount 1U |
| Height | 44 mm | 44 mm | 44 mm | 44 mm | 44 mm |
| Manufacturer Part Number | CBS350-48T-4X-UK | CBS350-24T-4G-NA | CBS350-24T-4X-NA | CBS350-12NP-4X-EU | CBS350-24MGP-4X |
| Memory | 512 MB | 512 MB | 512 MB | 512 MB | 512 MB |
| Power Consumption | 51.01W | 25.91W | 27.54W | 494.5W | 476.6W |
| Switching Capacity | 176 Gbps | 56 Gbps | 128 Gbps | 200 Gbps | 140 Gbps |
| Weight | 3.95 kg | 2.63 kg | 2.78 kg | 4.24 kg | 3.99 kg. |
| Width | 445 mm | 445 mm | 445 mm | 440 mm | 440 mm |
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CBS350-48T-4X-UK identifies a Business 350 managed switch: CBS350 names the series, 48 gives the copper port count, T identifies the non-PoE configuration, and 4X identifies four 10G SFP+ connections. UK selects the regional ordering variant covering the United Kingdom and several other markets, rather than a software license tier.
CBS350-48T-4X-UK supports browser management over HTTP/HTTPS, console CLI, remote CLI through SSH or Telnet, SNMP, Cisco Business Dashboard, and the Cisco Business mobile app. The embedded dashboard probe removes the need for a separate probe appliance. Cisco Network Plug and Play provides an additional provisioning path for device rollouts.
Yes, CBS350-48T-4X-UK is discontinued, with end of sale on October 29, 2024 and last support on October 31, 2029. Software maintenance and vulnerability/security support ended October 29, 2025. Hardware-service eligibility does not extend the software-fix window, so new deployments need explicit acceptance of those dates.
ORM supplies CBS350-48T-4X-UK new sealed or certified refurbished, with up to a 3-year extended warranty on new units and up to 1 year on refurbished units. Cisco's limited lifetime hardware warranty is bounded by October 31, 2029. Every condition includes 30-day returns; terms apply.
No switch software license or subscription is required for CBS350-48T-4X-UK; the hardware purchase includes all switch features and functionality. The UK suffix selects a regional ordering variant rather than a software package. Separately purchased support services do not create a subscription requirement or a feature-unlock requirement for operating the switch.
CBS350-48T-4X-UK replaced the discontinued SG350X-48-K9-UK and SG550X-48-K9-UK. SG350X-48-K9-UK reached end of sale on October 30, 2021; SG550X-48-K9-UK followed on July 30, 2022. Existing configurations still require validation during migration, and neither legacy SG-series model can join a CBS350 hardware stack.
SFP-10G-SR and SFP-10G-LR support fiber connections on CBS350-48T-4X-UK, while SFP-H10GB-CU1M supports a 1 m copper connection. Match SFP-10G-SR to multimode fiber or SFP-10G-LR to single-mode fiber, then verify the required reach and include the selected connection hardware with the switch order.
CBS350-48T-4X-UK supports four-member hardware stacking with ring or chain layouts, and every member must run the same firmware version. At least two 10G ports per member must be assigned to stacking. Legacy SG-series switches cannot join the stack, so confirm membership and connection allocation before ordering.
Yes, CBS350-48T-4X-UK supports inter-VLAN routing using static routes, RIPv2 and PBR, with 990 static routes and 128 IP interfaces. Routed interfaces can be physical ports, link aggregation groups, VLAN interfaces or loopbacks. Size the addressing and routing plan against those limits rather than treating the switch as an enterprise routing chassis.
CBS350-48P-4X-UK adds PoE+ with a shared 370W budget, while CBS350-48T-4X-UK provides no PoE output. Both models are discontinued. The powered model addresses retained PoE installations; the non-PoE model addresses independently powered devices. For a new powered deployment, C1300-48P-4X is the current migration option.
CBS350-48T-4X-UK has four 10G SFP+ connections, whereas CBS350-48T-4G-UK has four 1G SFP connections. Both regional models are discontinued, so this comparison applies to legacy replacement requirements rather than a current-generation recommendation. The 4X model suits retained 10G aggregation; the 4G model suits retained Gigabit aggregation.
C1300-48T-4X is the current migration replacement for discontinued CBS350-48T-4X-UK, whose end-of-sale date was October 29, 2024. Both configurations provide 48 Gigabit ports and four 10G SFP+ connections. Retained installations may require the older regional model; buyers establishing a new hardware standard should specify C1300-48T-4X.
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