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SG350-52P-K9-UK
Cisco SG350-52P-K9-UK 350 48-Port Gigabit PoE+ Switch, 4x1G...
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SG350-52P-K9-UK is a managed Layer 2+ access switch with 48 Gigabit Ethernet PoE+ ports for small-business networks connecting phones, wireless access points and workstations. Fixed uplinks comprise two dedicated 1G SFP ports and two 1G copper/SFP combo ports; each combo connection activates either its copper interface or its fiber interface, not both simultaneously. The full-width 1U chassis fits rack installations without an uplink expansion card. Within the Cisco Small Business range, the SG350-52P combines endpoint power with VLAN segmentation, access controls and voice traffic prioritization. Cisco 350 Series management supports browser-based administration and command-line configuration. Compared with the discontinued SG350-52-K9-UK, this powered version supplies connected devices rather than providing data connectivity alone.
SG350-52P-K9-UK price is is available on request. Get immediate quote.
Request bulk order quote for SG350-52P-K9-UK for additional pricing. Browse the full Cisco 350 Series Managed Switches series or explore all Cisco products.
104 Gbps switching capacity provides nonblocking forwarding across the available connections. 77.38 Mpps forwarding handles the short-packet workload measured with 64-byte packets. 375W of shared PoE power must cover the combined endpoint allocation, rather than every powered port drawing its individual maximum simultaneously. Static IPv4 routing connects local subnets, while PBR directs matching IPv4 or IPv6 traffic toward selected next hops; dynamic routing is not available. SG350-52P-K9-UK uses 512 MB of memory and 256 MB of flash for its running software and stored images. A 3 MB packet buffer is dynamically shared across ports to absorb traffic bursts. STP/RSTP/MSTP handle loop prevention, and LACP supports aggregated connections. Browser management, a scriptable CLI and SNMP support different administration workflows. The internal universal AC supply accommodates regional mains power, while the 440W maximum draw includes endpoint power and belongs in upstream power sizing. Hardware stacking is not supported.
Specify SG350-52P-K9-UK as new sealed or certified refurbished, with condition, quantity and required optics on the purchase order. Certified refurbished units are inspected and bench-tested; PoE output is verified under load on every powered port, firmware is verified, and configurations are wiped to factory default. ORM provides up to 3-year extended warranty for new units and up to 1 year for certified refurbished units, plus 30-day returns on every condition, terms apply; Cisco's separate limited lifetime hardware warranty is bounded by October 31, 2026. Enterprise and volume POs are accepted, with Net-30 for government, RMA with advance replacement, and regional stock/RMA in the UK, EU, US and MEA.
| Key Specs | Key Spec Values |
|---|---|
Port Configuration | 48x1G PoE+, 2x1G SFP, 2x1G copper/SFP combo |
PoE Budget | 375W |
Max Power Draw | 440W |
Cooling | 3 fans |
Lifecycle Status | End of sale October 30, 2021 |
Replacement PID | C1300-48P-4G |
When a phone, camera or wireless endpoint refresh introduces higher individual power demands, eight ports support 60W PoE while the remaining powered ports support 30W. These are per-port ceilings, not simultaneous full-power guarantees. Match endpoint compatibility and allocated power before specifying the powered-port map on the purchase order.
When a branch needs separate workgroups with local gateway interfaces, the switch supports 128 IP interfaces and 4094 simultaneous VLANs. Interface assignment can use physical ports, link aggregation groups, VLAN interfaces or loopback interfaces. Define the required interface count, address plan and external router handoff before approving the configuration and purchase order.
When a replacement is being validated against an existing configuration, port mirroring supports one session with eight source ports and one destination port. That limit determines which traffic flows can be observed together during testing. Reserve the analyzer connection and define the capture scope before ordering the equipment required for staging.
10G uplinks to distribution
SG350-52P-K9-UK has Gigabit uplinks and cannot provide a 10G uplink connection. C1300-48P-4X provides four 10G SFP+ uplinks while retaining 48 Gigabit copper access ports.
Cisco support beyond October 2026
SG350-52P-K9-UK reaches its last date of support on October 31, 2026. C1300-48P-4G is the current migration endpoint after the discontinued intermediate replacement.
Mon–Fri: [09:00-16:00]
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| SG350-52P-K9-UK |  SG350-28MP |  SG350-10P-K9-EU |  SG350-28MP-K9-NA |  SG350-28SFP-K9-EU | |
|---|---|---|---|---|---|
| Depth | 350 mm | 257 mm | 170 mm | 257 mm | 203 mm |
| Ethernet Technology | Gigabit Ethernet | Gigabit Ethernet | Gigabit Ethernet | 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 | SG350-52P-K9-UK | SG350-28MP | SG350-10P-K9-EU | SG350-28MP-K9-NA | SG350-28SFP-K9-EU |
| Memory | 512 MB | 512 MB | 512 MB | 512 MB | 512 MB |
| Power Consumption | 440W | 451.2W | 84.7W | 451.2W | 34.3W |
| SFP Ports | 2 x 1GbE / 2 x 1GbE (Combo, shared with RJ-45) | 2 x 1GbE / 2 x 1GbE (Combo, shared with RJ-45) | 2 x 1GbE (Combo, shared with RJ-45) | 2 x 1GbE / 2 x 1GbE (Combo, shared with RJ-45) | 26 x 1GbE / 2 x 1GbE (Combo, shared with RJ-45) |
| Switching Capacity | 104 Gbps | 56 Gbps | 20 Gbps | 56 Gbps | 56 Gbps |
| Weight | 3.81 kg | 3.37 kg. | 1.19 kg. | 3.37 kg | 2.7 kg |
| Width | 440 mm | 440 mm | 280 mm | 440 mm | 440 mm |
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SG350-52P-K9-UK identifies a Gigabit Cisco 350 Series PoE model with 52 total network ports and a UK-region ordering suffix. The 52-port configuration comprises 48 powered access ports and four uplinks. P distinguishes the powered version, while UK covers the United Kingdom and additional markets including Singapore, Hong Kong and Malaysia.
The Cisco 350 Series is managed through an HTTP/HTTPS web interface, CLI over the RJ-45 console or SSH/Telnet, SNMP v1/v2c/v3, Smart Network Application, FindIT Network Manager and Cisco Active Advisor. FindIT also supports an embedded probe, while the built-in web interface provides simple and advanced configuration modes.
Yes, SG350-52P-K9-UK is discontinued: end of sale was October 30, 2021, and the last date of support is October 31, 2026. Software maintenance ended October 30, 2022. Its direct replacement, CBS350-48P-4G-UK, is also discontinued; the migration chain continues to C1300-48P-4G, with 48 Gigabit copper ports and four 1G SFP uplinks.
ORM Systems offers SG350-52P-K9-UK new sealed or certified refurbished, with up to 3-year extended warranty for new units and up to 1 year for refurbished units. Returns are 30 days on every condition; terms apply. Cisco's limited lifetime hardware warranty is separate and bounded by the last date of support, October 31, 2026.
SG350-52P-K9-UK replaced the discontinued SG300-52P-K9-UK, a 52-port Gigabit PoE managed switch. SG350-52P-K9-UK is also discontinued, so this replacement relationship belongs to an older migration path. The subsequent migration proceeds through discontinued CBS350-48P-4G-UK to C1300-48P-4G, the current endpoint of that replacement chain.
SG350-52P-K9-UK provides a shared 375W PoE budget across 48 powered access ports. Eight ports support 60W PoE, while the other powered ports support a maximum of 30W each. Those individual limits do not mean every port can supply its maximum simultaneously; combined allocations remain bounded by the shared budget.
The SG350-52P supports two dedicated 1G SFP uplinks and two additional 1G copper/SFP combo uplinks. Each combo port uses only one medium at a time. Compatible fiber transceivers include MGBSX1 for multimode connections to 500 m and MGBLX1 for single-mode connections to 10 km; these are fixed cages, not expansion-module bays.
The Cisco 350 Series provides static IPv4 routing with 990 static routes and 128 IP interfaces, plus IPv6 routing and PBR. Interfaces can be assigned to physical ports, link aggregation groups, VLANs or loopbacks. These static-routing capabilities place the switch in Layer 2+ rather than a dynamic-routing access role.
Yes, SG350-52P-K9-UK is a full-width, rack-mount 1U switch measuring 440 mm wide, 44 mm high and 350 mm deep. Its 3.81 kg weight and internal AC power input belong in the rack and power plan. Three fans provide active cooling, so the chassis is not fanless.
SG350-52P-K9-UK supplies PoE on its 48 access ports, whereas SG350-52-K9-UK provides non-PoE access connections. Both models are discontinued. For legacy replacement purchases, SG350-52P-K9-UK addresses endpoints requiring switch-delivered power; SG350-52-K9-UK corresponds to installations where endpoint power comes from another source and powered access ports are unnecessary.
SG350-52P-K9-UK has 48 Gigabit PoE+ access ports, while SG350-28P-K9-UK has 24. Both models are discontinued, so the comparison applies to maintaining existing installations rather than selecting a current generation. The larger model serves replacement requirements needing the higher connection count; the smaller model matches a 24-access-port footprint.
C1300-48P-4G has four dedicated 1G SFP uplinks, whereas SG350-52P-K9-UK divides its four uplinks between two dedicated SFP ports and two copper/SFP combo ports. The discontinued SG350 model retains its mixed-media arrangement for legacy replacements; C1300-48P-4G serves current migration purchases requiring four independent fiber uplink connections.
United States
