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SG220-50-K9-UK
Cisco SG220-50-K9-UK 220 48-Port Gigabit Switch, 2x1G Combo...
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SG220-50-K9-UK is a Layer 2 smart-managed switch with 48 dedicated 10/100/1000 access ports and two Gigabit RJ-45/SFP combo uplinks for copper or fiber connections. The non-PoE design connects separately powered desktops, printers, and servers rather than supplying endpoint power over Ethernet. Its full-width, rack-mount 1U chassis belongs to the Cisco 220 Series Smart Switches family for small and midsize business networks. Each combo uplink uses either its copper connection or its SFP slot, not both simultaneously. The discontinued SG220-50P-K9-UK differs by adding PoE+ to the access connections. Port security can restrict learned source addresses on individual connections, while guest VLANs separate visitor traffic from business resources.
SG220-50-K9-UK price is is available on request. Get immediate quote.
Request bulk order quote for SG220-50-K9-UK for additional pricing. Browse the full Cisco 220 Series Smart Switches series or explore all Cisco products.
100 Gbps switching capacity supports access traffic, while 74.4 Mpps forwarding specifies performance with 64-byte packets. An 8192-entry MAC table bounds learned Layer 2 destinations. SG220-50-K9-UK carries 128 MB of DRAM and 32 MB of flash, with a dynamically shared 12 Mb packet buffer across its ports. STP, RSTP, and MSTP provide loop control; LACP combines connections into link aggregation groups rather than a hardware stack. Inter-VLAN routing is not available. Management of the Cisco SG220-50 includes a browser interface, full CLI, SNMP, and Cisco FindIT Network Manager. SSH and HTTPS protect remote administration. The internal AC supply accepts 100-240V input for connection to local mains power. 39.9W system consumption at 220V provides an electrical-load reference for power planning. One fan supplies active cooling, and the 0°C to 50°C operating range sets the installation's ambient-temperature limits.
SG220-50-K9-UK is available new sealed or certified refurbished; refurbished units are inspected and bench-tested for power-on, POST, clean boot, rated-speed links on every port, and optics bay recognition, with firmware verified and configurations wiped to factory default. Specify condition, quantity, destination power cord, and required accessories on the PO. ORM warranties are up to a 3-year extended term for new units and up to 1 year for certified refurbished units, with 30-day returns on every condition; terms apply. For enterprise and volume orders, POs are accepted, government buyers receive Net-30, and RMA includes advance replacement, with regional stock/RMA in the UK, EU, US, and MEA.
| Key Specs | Key Spec Values |
|---|---|
Port Configuration | 48 x 1G / 2 x 1G RJ-45/SFP combo uplinks |
Max Power Draw | 39.9W at 220V AC |
Cooling | 1 fan |
Lifecycle Status | End of sale July 30, 2022 |
Replacement PID | CBS220-48T-4G-UK |
When several sites need the same configuration baseline, text-editable configuration files can be downloaded to another switch rather than recreated manually. CLI privilege levels 1 and 15 separate access roles. Specify the approved configuration file, administrator access requirements, and firmware baseline before issuing the purchase order.
When a replacement must be prepared before a maintenance window, dual firmware images and dual configuration files allow existing and proposed software states to be retained. A mirror configuration backs up the latest stable configuration. Specify image selection, saved configuration, and reboot validation in the staging instructions.
When voice devices share an existing office network, automatic voice VLAN assignment and LLDP-MED can place detected phones into the intended voice configuration. Eight hardware queues per port support traffic prioritization. Define the voice policy, endpoint power arrangements, and discovery settings before the purchase order is approved.
Power delivery to connected endpoints
The copper ports carry data without supplying PoE. CBS220-48P-4G-UK is the current PoE-capable alternative, retaining 48 Gigabit access ports with four Gigabit SFP uplinks.
Uplinks faster than Gigabit Ethernet
The fixed RJ-45/SFP combo uplinks operate at 1GbE. Faster optics cannot increase their speed, and there is no removable uplink-card bay for a 10G upgrade.
Inter-VLAN routing on the switch
Layer 2 forwarding does not provide inter-VLAN routing. A separate router or routing-capable switch must supply the gateways for traffic moving between VLANs.
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| SG220-50-K9-UK |  SG220-28MP-K9 |  SG220-28MP-K9-EU |  SG220-50-K9-NA |  SG220-26P-K9-NA | |
|---|---|---|---|---|---|
| Depth | 201 mm | 250 mm | 250 mm | 201 mm | 250 mm |
| Ethernet Technology | Gigabit Ethernet | Gigabit Ethernet | Gigabit Ethernet | Gigabit Ethernet | Gigabit Ethernet |
| Flash Memory | 32 MB | 32 MB | 32 MB | 32 MB | 32 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 | SG220-50-K9-UK | SG220-28MP-K9 | SG220-28MP-K9-EU | SG220-50-K9-NA | SG220-26P-K9-NA |
| Memory | 128 MB | 128 MB | 128 MB | 128 MB | 128 MB |
| Power Consumption | 39.9W at 220V AC | 426W | 426W | 39.9W | 206.5W |
| SFP Ports | 2 x 1GbE (Combo, shared with RJ-45) | 4 x 1GbE | 4 x 1GbE | 2 x 1GbE (Combo, shared with RJ-45) | 2 x 1GbE (Combo, shared with RJ-45) |
| Switching Capacity | 100 Gbps | 56 Gbps | 56 Gbps | 100 Gbps | 52 Gbps |
| Weight | 3.3 kg | 4.26 kg | 4.26 kg | 3.3 kg | 3.7 kg |
| Width | 440 mm | 440 mm | 440 mm | 440 mm | 440 mm |
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SG220-50-K9-UK identifies the Gigabit Smart Switch model with 48 dedicated copper ports and two combo uplinks, for 50 logical ports. SG220 names the family, 50 denotes that total, K9 remains part of the complete ordering code, and UK selects the United Kingdom regional variant.
SG220-50-K9-UK is managed through an HTTP/HTTPS web interface, a full CLI over console, SSH or Telnet, SNMP, and Cisco FindIT Network Manager. Cisco FindIT Network Discovery Utility helps locate devices, while editable configuration files and scriptable CLI commands support repeatable setup across multiple switches.
SG220-50-K9-UK is discontinued: end of sale was July 30, 2022, and the last date of Cisco support is July 31, 2027. Software maintenance ended July 30, 2023. CBS220-48T-4G-UK is the current replacement, with four Gigabit SFP uplinks rather than the older model's two combo uplinks.
ORM Systems offers SG220-50-K9-UK new sealed or certified refurbished, with up to a 3-year extended warranty for new units and up to 1 year for refurbished units. Cisco's separate limited lifetime hardware warranty is bounded by July 31, 2027. Every condition includes 30-day returns; terms apply.
SG220-50-K9-UK replaces the discontinued SLM2048T-UK, the SG 200-50 50-port Gigabit Smart Switch. The replacement retains a 50-port Gigabit configuration through dedicated access ports and combo uplinks. Buyers maintaining that older estate should distinguish this replacement role from the SG220 model's own discontinued lifecycle.
Yes, SG220-50-K9-UK supports Gigabit fiber through two SFP positions shared with the RJ-45 sides of its combo uplinks. MGBSX1 supports multimode links to 550 m, and MGBLX1 supports single-mode links to 10 km. Each combo pair permits only one active medium at a time.
No, SG220-50-K9-UK uses one internal AC power supply rather than dual redundant supply modules. The input range is 100-240V AC at 50-60Hz. A second internal supply cannot be added, so procurement should not include redundant internal PSU kits for this model.
Cisco 220 Series Smart Switches support STP, RSTP, MSTP, LACP, VLANs, access control lists, and multicast snooping. The series supports 256 simultaneous VLANs and 512 access control rules. These are switching and policy functions rather than inter-VLAN routing, so routed gateways remain outside this model.
Cisco SG220-50 occupies one rack unit and measures 440 mm wide, 44 mm high, and 201 mm deep. The chassis weighs 3.3 kg and uses one fan, so the installation is not fanless. A rack mounting kit is included in the original package.
SG220-50-K9-UK provides 100 Gbps switching capacity and 74.4 Mpps forwarding with 64-byte packets. The switch also has an 8192-entry MAC table, 128 MB of DRAM, and 32 MB of flash. Those figures describe the standalone switch, not a combined stack or an expansion module.
SG220-50-K9-UK supplies no endpoint power, whereas the discontinued SG220-50P-K9-UK provides PoE+ across 48 access ports from a shared 375W budget. Both models are discontinued. The non-PoE model fits separately powered equipment; the PoE sibling addresses Ethernet-powered endpoints, subject to the total shared power budget.
SG220-50-K9-UK has 48 dedicated Gigabit access ports, whereas the discontinued SG220-26-K9-UK has 24. Both provide two Gigabit RJ-45/SFP combo uplinks, and both are discontinued. For legacy hardware matching, the larger model addresses higher connection counts; the smaller model fits lower-density requirements without changing the uplink arrangement.
CBS220-48T-4G-UK provides four dedicated Gigabit SFP uplinks, whereas SG220-50-K9-UK has two Gigabit RJ-45/SFP combo uplinks. Both retain 48 Gigabit access ports without PoE. The current successor fits buyers requiring four dedicated fiber uplinks; the discontinued SG220 model fits an existing two-combo-uplink configuration.
United States
