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SX350X-52-K9-EU
Cisco SX350X-52-K9-EU 350X 48-Port 10 Gigabit Switch, 4x10G...
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SX350X-52-K9-EU provides 48 dedicated 10GBase-T copper connections and four dedicated 10G SFP+ uplinks for SMB networks connecting servers and storage. This managed, non-PoE switch combines Layer 2 switching with static routing, placing it in the Layer 2+ category. Its fixed uplinks operate independently of the copper access ports, without a removable uplink card. The full-width 1U chassis belongs to the Cisco 350X Series Stackable Managed Switches. Copper and SFP+ connections support both 10G and 1G operation. The discontinued SX350X-24-K9-EU sibling has fewer copper connections and shared copper/SFP+ uplinks rather than dedicated fiber uplinks.
SX350X-52-K9-EU price is is available on request. Get immediate quote.
Request bulk order quote for SX350X-52-K9-EU for additional pricing. Browse the full Cisco SX350X Switches series or explore all Cisco products.
1040 Gbps switching capacity provides nonblocking forwarding across the switch. 755.81 Mpps forwarding capacity applies to 64-byte packets. Static routing supports 990 IPv4 routes and 128 IP interfaces; IPv6 supports 245 static routes and 106 interfaces. LACP supports aggregated connections, while STP, RSTP, and MSTP provide spanning-tree operation. SX350X-52-K9-EU carries 512 MB of memory and 256 MB of flash for management and image storage. A dynamically shared 10 MB packet buffer serves the ports, and the MAC table accommodates 32000 addresses. Browser management and a scriptable CLI provide configuration access, with a separate Gigabit Ethernet port for out-of-band management. 234.4W worst-case consumption provides the maximum published figure for electrical planning; five fans provide active cooling.
Order SX350X-52-K9-EU new sealed or certified refurbished, specifying condition and accessory requirements on the PO. Certified refurbished units are inspected and bench-tested for power-on and POST, rated-speed port links, clean boot, optics bay recognition, PSU status, and fan status; firmware is verified and configurations are wiped to factory default. ORM's new warranty is up to 3-year extended, refurbished warranty up to 1 year, and returns are 30 days for every condition, terms apply; Cisco's separate limited lifetime warranty is bounded by July 31, 2027. Enterprise and volume orders support PO acceptance, Net-30 for government, and RMA with advance replacement, with regional stock and RMA across UK, EU, US, and MEA.
| Key Specs | Key Spec Values |
|---|---|
Port Configuration | 48 x 10GBase-T / 4 x dedicated 10G SFP+ |
Stacking | Hardware stacking / four members |
Max Power Draw | 234.4W |
Replaces | SG350XG-48T-K9-EU / end of sale June 18, 2020 |
Lifecycle Status | End of sale July 30, 2022 |
Replacement PID | CBS350-48XT-4X-EU, discontinued / no current successor |
When an installed SG350XG-48T-K9-EU needs replacement, SX350X-52-K9-EU is its named migration model. Cisco service for the older switch ended June 30, 2025. Treat this as a legacy replacement order rather than an open-ended refresh; confirm the required service horizon before issuing the PO.
When extending an existing hardware stack, the 350X Series allows SG350X, SG350XG, and SX350X models together. Copper or fiber 10G interfaces provide stack interconnects, with ring or chain topologies. Reserve the intended interconnect ports and specify the cabling layout before ordering an additional member.
When a spare must be validated before production installation, port mirroring can send traffic from eight source ports to one destination port. Build that traffic-observation step into staging, alongside the planned configuration, and confirm the required test connections before selecting the spare's order condition.
Power over Ethernet for endpoints
SX350X-52-K9-EU provides data-only Ethernet connections without PoE output. Phones, wireless access points, and other powered devices cannot receive their operating power from this model.
Stacks with more than four members
The 350X Series limits a hardware stack to four members. A fifth switch cannot join the same stack, so a larger single stack exceeds supported membership.
Fanless operation beside occupied workspaces
SX350X-52-K9-EU uses five fans. Acoustic output is 47.9 dB from 0°C to 35°C and 60.4 dB at 50°C, excluding fanless operation.
Mon–Fri: [09:00-16:00]
Avg. response under 30 mins
| SX350X-52-K9-EU |  SX350X-24-K9-EU |  SX350X-12-K9 |  SX350X-12-K9-EU |  SX350X-12-K9-NA | |
|---|---|---|---|---|---|
| Depth | 450 mm | 350 mm | 203 mm | 203 mm | 203 mm |
| Ethernet Technology | 10 Gigabit Ethernet | 10 Gigabit Ethernet | 10 Gigabit Ethernet | 10 Gigabit Ethernet | 10 Gigabit Ethernet |
| 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 | SX350X-52-K9-EU | SX350X-24-K9-EU | SX350X-12-K9 | SX350X-12-K9-EU | SX350X-12-K9-NA |
| Memory | 512 MB | 512 MB | 512 MB | 512 MB | 512 MB |
| Power Consumption | 234.4W | 124.5W | 64.1W | 64.1W | 64.1W |
| Switching Capacity | 1040 Gbps | 480 Gbps | 240 Gbps | 240 Gbps | 240 Gbps |
| Weight | 7.29 kg | 5.1 kg | 2.93 kg | 2.93 kg | 2.93 kg |
| Width | 440 mm | 440 mm | 440 mm | 440 mm | 440 mm |
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SX350X-52-K9-EU identifies a 350X managed 10 Gigabit Ethernet switch with 52 network connections: 48 copper ports and four dedicated SFP+ ports. SX350X identifies the 10 Gigabit Ethernet model group; 52 represents those network connections; EU is the country and region ordering suffix.
SX350X-52-K9-EU supports an HTTP/HTTPS web interface, console CLI, SSH or Telnet CLI, SNMP, Smart Network Application, Cisco FindIT Network Manager, and Active Advisor. An embedded FindIT Network Probe supports centralized discovery. A dedicated Gigabit Ethernet management port provides out-of-band access separately from the network-facing connections.
SX350X-52-K9-EU is discontinued, with an end-of-sale date of July 30, 2022, and a last date of support of July 31, 2027. Software maintenance ended July 30, 2023. Its replacement is also discontinued, so purchasing this model requires a defined legacy-hardware and support horizon.
ORM Systems offers SX350X-52-K9-EU new sealed or certified refurbished. New units carry up to a 3-year extended ORM warranty; certified refurbished units carry up to 1 year. Returns are 30 days in either condition, terms apply. Cisco's separate limited lifetime hardware warranty and applicable support end July 31, 2027.
SX350X-52-K9-EU replaces SG350XG-48T-K9-EU, which ended sale June 18, 2020. Cisco service for that older model ended June 30, 2025. The replacement relationship applies to this exact regional PID, but SX350X-52-K9-EU also has its own finite support horizon and should not be treated as a current-generation refresh.
No, SX350X-52-K9-EU does not supply PoE to connected devices. Its copper network connections carry Ethernet data, and the switch receives operating power through its internal AC supply. Phones, wireless access points, and other endpoints requiring power through their Ethernet connection need a separate power arrangement.
Yes, SX350X-52-K9-EU supports static routing between VLANs, with 990 IPv4 static routes and 128 IP interfaces. IPv6 supports 245 static routes and 106 interfaces. Routing interfaces can be configured on physical ports, link aggregation groups, VLAN interfaces, or loopbacks; the routing capability is static rather than dynamic.
SX350X-52-K9-EU supports SFP-10G-SR= for multimode fiber, SFP-10G-LR= for single-mode fiber, and SFP-H10GB-CU3M= for a 3 m copper connection. SFP-10G-LR= supports 10 km links. Select accessories according to the installed media, link distance, and connection required at the other end.
A Cisco 350X hardware stack contains a maximum of four switches under one management IP address. SG350X, SG350XG, and SX350X models can be mixed. Ring and chain arrangements use 10G copper or fiber interconnects, and link aggregation can combine interfaces for the stacking connection.
Yes, SX350X-52-K9-EU is a full-width 1U rack switch measuring 440 mm wide, 44 mm high, and 450 mm deep, with a weight of 7.29 kg. A mounting kit is included in the original package. Confirm rack depth and the order's accessory contents before installation.
SX350X-52-K9-EU accepts 100-240V AC at 47-63 Hz through its internal universal supply. Worst-case consumption is 234.4W at 110V and 229.2W at 220V. These figures describe switch operation without endpoint power delivery and provide the electrical load figures for planning the installation's power allocation.
CBS350-48XT-4X-EU is the replacement for SX350X-52-K9-EU, but CBS350-48XT-4X-EU is also discontinued. That replacement ended sale October 29, 2024, with support ending October 31, 2029. No current migration product is available for it, so the replacement chain does not identify a current purchasing alternative.
SX350X-52-K9-EU provides 48 dedicated copper connections, whereas SX350X-24-K9-EU provides 20 dedicated copper connections plus four copper/SFP+ combo connections. Both are discontinued 10 Gigabit Ethernet models. The larger model suits legacy orders requiring greater dedicated copper density; the smaller model suits a lower connection count.
SX350X-52-K9-EU emphasizes copper access with 48 copper ports, whereas SX350X-24F-K9-EU provides 20 dedicated SFP+ ports and four copper/SFP+ combo connections. Both are discontinued models. The former suits copper-heavy legacy installations; the latter suits fiber-heavy installations and has fewer total network connections.
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