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CBS350-12NP-4X-UK
Cisco CBS350-12NP-4X-UK Business 350 12-Port Multigigabit Po...
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CBS350-12NP-4X-UK provides multigigabit connectivity across twelve copper access ports, with speeds reaching 5G rather than limiting faster endpoints to Gigabit Ethernet. This managed Layer 2+ switch combines PoE+ access with four fixed 10G uplinks: two dedicated SFP+ interfaces and two copper/SFP+ combo interfaces. Each combo interface uses either its copper connection or its optical connection, not both simultaneously. The Cisco Business 350 series serves small-business networks requiring powered endpoint connections and local traffic segmentation in a rack-mount 1U chassis. Within the Cisco Business portfolio, this configuration concentrates multigigabit access across every downlink rather than mixing faster ports with Gigabit-only connections. The discontinued CBS350-48NGP-4X-UK increases the shared PoE allowance to 740W for installations whose endpoint power requirements exceed this model's allocation.
CBS350-12NP-4X-UK price for new stock is is available on request. Get immediate quote. CBS350-12NP-4X-UK refurb price is $3,089.46.
Request bulk order quote for CBS350-12NP-4X-UK for additional pricing. Browse the full Cisco CBS350 Business Switches series or explore all Cisco products.
200 Gbps switching capacity provides nonblocking bandwidth across the access and uplink interfaces. 148.8 Mpps forwarding handles 64-byte packets at the published maximum rate. Static routing, RIP v2 and PBR support local traffic handling between networks, with 990 static routes and 128 IP interfaces available for configuration. CBS350-12NP-4X-UK combines 512 MB DRAM with 256 MB flash for its operating software and configuration storage. A dynamically shared 3 MB packet buffer accommodates traffic across the ports, while the MAC address table holds 16000 entries. Browser configuration, a scriptable CLI and SNMP provide local administration and monitoring choices. STP, RSTP, MSTP and LACP support loop control and aggregated connections, while sFlow exports traffic samples to an external collector. 494.5W maximum power consumption, including PoE, establishes the upper published input requirement for electrical planning. Three fans provide active cooling rather than fanless operation, with an operating temperature range of 0°C to 50°C governing equipment placement.
ORM Systems supplies CBS350-12NP-4X-UK new sealed or certified refurbished; refurbished units are inspected and bench-tested, with PoE output verified under load on every powered port, firmware verified, and configurations wiped to factory default. New units carry up to a 3-year extended warranty, certified refurbished units carry up to 1 year, and every condition includes 30-day returns; terms apply. Specify the condition, quantity and required optics on the purchase order. For enterprise and volume orders, PO is accepted, Net-30 is available for government, and RMA includes advance replacement, with regional stock and RMA across the UK, EU, US and MEA.
| Key Specs | Key Spec Values |
|---|---|
Port Configuration | 12 x 5G PoE+ / 4 x 10G uplinks |
PoE Budget | 375W shared |
Stacking | Hardware stacking / 4 members |
Cooling | 3 fans |
Replaces | SG350X-12PMV-K9-UK / end-of-sale July 30, 2022 |
Lifecycle Status | End-of-sale May 30, 2024 |
When replacing an SG350X-12PMV-K9-UK in an established installation, preserve the site's endpoint assignments and upstream media requirements during staging. Treat configuration migration and stack compatibility as checks rather than assumptions. Specify the regional order code, required operating configuration and any missing connection hardware before issuing the purchase order.
When an existing installation needs another managed stack member, ring and chain arrangements provide different interconnect layouts. Active and standby roles govern stack control, while cross-stack link aggregation can span member switches. Confirm the intended topology, available interconnect interfaces and connection lengths before specifying the additional hardware and cabling.
When a purchase is intended for packet-capture testing or staging, the switch can mirror eight source ports to one destination port. RSPAN extends mirrored traffic across a Layer 2 domain. Specify the capture destination, monitoring connection and required test topology before adding the unit to the purchase order.
Eight simultaneous 60W endpoint loads
Eight concurrent 60W loads require 480W, exceeding the shared 375W PoE allocation before other endpoints receive power. No current migration model is named for this discontinued switch.
Silent and fanless equipment
Three fans cool the chassis, and acoustic output is 39.4 dB at 25°C. The switch is not a fanless unit for noise-sensitive equipment locations.
Continuing security maintenance releases
Vulnerability and security support ended May 30, 2025, so further security remedies are outside the product's maintenance lifecycle. No current migration product is named for this model.
Mon–Fri: [09:00-16:00]
Avg. response under 30 mins
| CBS350-12NP-4X-UK |  CBS350-48T-4X-EU |  CBS350-8T-E-2G-NA |  CBS350-48XT-4X-EU |  CBS350-48FP-4X-NA | |
|---|---|---|---|---|---|
| Depth | 257 mm | 288 mm | 185 mm | 450 mm | 350 mm |
| Ethernet Technology | Multi-Gigabit (2.5G/5G) | Gigabit Ethernet | Gigabit Ethernet | 10 Gigabit Ethernet | Gigabit Ethernet |
| Flash Memory | 256 MB | 256 MB | 256 MB | 256 MB | 256 MB |
| Form Factor | Rack-Mount 1U | Rack-Mount 1U | Desktop | Rack-Mount 1U | Rack-Mount 1U |
| Height | 44 mm | 44 mm | 44 mm | 44 mm | 44 mm |
| Manufacturer Part Number | CBS350-12NP-4X-UK | CBS350-48T-4X-EU | CBS350-8T-E-2G-NA | CBS350-48XT-4X-EU | CBS350-48FP-4X-NA |
| Memory | 512 MB | 512 MB | 512 MB | 512 MB | 512 MB |
| Power Consumption | 494.5W | 51.01W | 12.56W | 234.4W | 889.35W |
| Switching Capacity | 200 Gbps | 176 Gbps | 20 Gbps | 1040 Gbps | 176 Gbps |
| Weight | 4.24 kg | 3.95 kg. | 1.39 kg | 7.29 kg | 5.82 kg |
| Width | 440 mm | 445 mm | 268 mm | 440 mm | 445 mm |
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CBS350-12NP-4X-UK identifies a Cisco Business 350 managed switch: CBS350 names the series, 12 denotes twelve access ports, NP identifies the multigigabit PoE+ configuration, and 4X denotes four 10G uplinks. The UK suffix selects the regional ordering group covering the United Kingdom and several other markets.
CBS350-12NP-4X-UK supports a web UI, CLI through SSH, Telnet or the RJ-45 console, SNMP, Cisco Business Dashboard, and the Cisco Business mobile app. HTTP/HTTPS provides browser access, while the embedded Dashboard probe avoids a separate local probe appliance. Cisco Network Plug and Play supports provisioning.
Yes, CBS350-12NP-4X-UK reached end-of-sale on May 30, 2024, and its last date of support is May 31, 2029. Software maintenance and vulnerability support ended May 30, 2025. Cisco names no migration product for this model, so the remaining hardware support period does not include continuing software maintenance.
ORM Systems offers CBS350-12NP-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. Both conditions have 30-day returns; terms apply. Cisco's separate limited lifetime warranty remains subject to its terms and ends no later than May 31, 2029.
CBS350-12NP-4X-UK provides a shared 375W PoE budget across twelve powered access ports, with eight ports supporting 60W PoE. All twelve access ports support PoE+. The higher per-port capability does not make 60W simultaneously available on every eligible port; endpoint allocations must remain within the total budget.
The Business 350 12-port multigigabit switch provides four 10G uplink interfaces: two dedicated SFP+ ports and two copper/SFP+ combo ports. Each combo pair allows only one active medium at a time. Supported fiber options include SFP-10G-SR for multimode connections and SFP-10G-LR for single-mode connections.
Four CBS350-12NP-4X-UK switches can form a hardware stack managed through one IP address. Ring and chain arrangements use 10G interconnections, with active and standby roles for stack control. Stack links consume connection resources, so the interconnect layout must be settled before allocating the remaining interfaces to upstream connections.
The Business 350 multigigabit model supports static IPv4 routing, RIP v2 and PBR, with 990 static routes and 128 IP interfaces. Routing interfaces can use physical ports, link aggregation groups, VLAN interfaces or loopback interfaces. IPv6 routing is also available, while these capabilities place this configuration in the Layer 2+ category.
CBS350-12NP-4X-UK replaces SG350X-12PMV-K9-UK, whose end-of-sale date was July 30, 2022. That replacement relationship identifies an upgrade path, not automatic configuration portability or stack interoperability. CBS350-12NP-4X-UK is itself discontinued, and no current migration product is named for it, so an existing-installation refresh requires a separate lifecycle decision.
CBS350-48NGP-4X-UK provides a 740W shared PoE budget, compared with 375W on CBS350-12NP-4X-UK. Both models are discontinued, and neither has a named migration product. For existing installations, the former accommodates a larger aggregate endpoint power allocation; the latter suits requirements that fit within its lower shared allowance.
CBS350-12NP-4X-UK provides twelve access ports reaching 5G, whereas CBS350-24MGP-4X-UK provides four 2.5G access ports alongside twenty Gigabit ports. Both are discontinued models. Existing installations needing multigigabit connectivity across every access connection align with the former; mixed-speed installations with only a small group of faster endpoints align with the latter.
CBS350-24NGP-4X-UK has twenty-four access ports, while CBS350-12NP-4X-UK has twelve. Both models are discontinued and lack a named migration product. The twenty-four-port configuration suits existing installations requiring more endpoint connections, while the twelve-port configuration suits a smaller access-port requirement; the larger model combines Gigabit and multigigabit downlinks.
United States
