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SG250-50-K9-UK

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Cisco SG250-50-K9-UK 250 48-Port Gigabit Switch, 2x1G Combo Uplinks
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sg250-50-k9-uk cisco sg250-50-k9-uk 250 48-port gigabit switch, 2x1g combo uplinks
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Cisco SG250-50-K9-UK 250 48-Port Gigabit Switch, 2x1G Combo...

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Smart Managed Access for Small Business Networks

SG250-50-K9-UK is a Layer 2+ smart-managed switch with 48 dedicated 10/100/1000 copper access ports and two fixed Gigabit copper/SFP combo uplinks. Each combo connection uses either its copper connector or its SFP slot, giving the non-PoE chassis a choice of uplink media without an expansion card. The Cisco 250 Series Smart Switches serve small-business networks connecting computers, printers, and servers, with traffic prioritization for voice and data. A 1U rack-mount enclosure places this model in an equipment rack rather than the compact desktop category. The discontinued SG250-50HP-K9-UK retains the same access-port density but adds a 192W PoE+ budget for powered endpoints. For buyers maintaining an existing SG250-50 installation, endpoint power is the principal distinction between these two versions, rather than a different copper access speed.

SG250-50-K9-UK price is is available on request. Get immediate quote.

Request bulk order quote for SG250-50-K9-UK for additional pricing. Browse the full Cisco SG250 Switches series or explore all Cisco products.

Technical Details

100 Gbps switching capacity supports wire-speed, nonblocking forwarding across the available interfaces. 74.41 Mpps forwarding at 64-byte packet size provides the packet-processing figure for comparing small-frame workloads. Static IPv4 routing supports 32 routes and 16 IP interfaces for limited inter-VLAN forwarding rather than dynamic routing. SG250-50-K9-UK combines 512 MB of DRAM and 256 MB of flash with a 24 Mb packet buffer shared across all ports. An 8000-entry MAC table accommodates learned endpoint addresses. Browser administration, a scriptable CLI, and SNMP provide management paths, while STP/RSTP/MSTP and LACP support loop control and aggregated links. Eight hardware queues allow strict-priority or weighted round-robin scheduling for traffic treatment. 35.4W worst-case consumption at 220V informs AC circuit sizing without an endpoint-power allocation. One cooling fan moves air through the enclosure, and the operating range extends from 0°C to 50°C. The switch does not provide 10G uplinks, so faster upstream connections require different hardware.

Ordering

Confirm condition, mounting hardware, and regional power cord on the purchase order for SG250-50-K9-UK, available new sealed or certified refurbished. Refurbished units are inspected and bench-tested for power-on and POST, rated-speed links on every port, optics bay recognition, PSU status, fan status, and clean boot; firmware is verified and configuration wiped to factory default. ORM warranties are up to 3-year extended for new units and up to 1 year for certified refurbished units, with 30-day returns on either condition, terms apply; Cisco's separate limited lifetime hardware coverage ends October 31, 2026, with 1-year fan and power-supply coverage. For enterprise and volume orders, POs are accepted with Net-30 for government and RMA with advance replacement; regional stock and RMA cover UK, EU, US, and MEA.

Buying Notes

Buying NotesKey Specs

Follow the replacement chain

SG250-50-K9-UK replacement orders should target C1200-48T-4G rather than the discontinued CBS250-48T-4G-UK. The original switch reached end of sale on October 30, 2021, so distinguish remaining reseller stock from current production.

Specify fiber optics separately

Fiber orders for SG250-50-K9-UK need optics specified separately: MGBSX1 supports multimode links up to 500 m, while MGBLX1 supports single-mode links up to 10 km. Match the transceiver to the remote end and installed fiber.

Key Specs

Key SpecsKey Spec Values

Port Configuration

48 x 1G / 2 x 1G copper/SFP combo

Max Power Draw

35.4W

Cooling

1 fan

Lifecycle Status

End of sale October 30, 2021

Replacement PID

C1200-48T-4G

SG250-50-K9-UK Specifications

Manufacturer Part Number
SG250-50-K9-UK
Brand
Cisco
Series
250
Use Case
SMB
Management Type
Smart Managed
Layer
Layer 2+
Routing Protocols
Static
Ethernet Technology
Gigabit Ethernet
RJ-45 Access Port Count
48
Power Input
Internal AC PSU
RJ-45 Ports
48 x 10/100/1000 / 2 x 10/100/1000 (Combo, shared with SFP)
SFP Ports
2 x 1GbE (Combo, shared with RJ-45)
Uplink Type
Fixed
Uplink Speed Class
1G
PoE Support
Non-PoE
Switching Capacity
100 Gbps
Forwarding Rate
74.41 Mpps
MAC Table Size
8000 Entries
IPv4 Route Scale
32 Routes
Memory
512 MB
Flash Memory
256 MB
Stackable
No
Form Factor
Rack-Mount 1U
Input Voltage
100-240V AC
Power Consumption
35.4W
Redundant PSU
No
Cooling
1 fan
Operating Temperature
0°C to 50°C
MTBF
134933 Hours
Cisco Warranty
Limited Lifetime / Cisco service ends October 31, 2026
Certifications
UL 60950 / CSA 22.2 / CE / FCC Part 15 (CFR 47) Class A
Height
44 mm
Width
440 mm
Depth
257 mm
Weight
2.94 kg

Best For

Workgroup Network Segmentation

When an office needs separate workgroups on an existing shared LAN, the switch can maintain 255 active VLANs and assign voice traffic to a dedicated voice VLAN. Prepare the VLAN membership and tagging plan, then check the active VLAN count before specifying the switch on the purchase order.

Repeatable Branch Configuration

When multiple small-business locations need a repeatable configuration, text-editable configuration files and protected SCP downloads support a common staging workflow. The CLI provides privilege levels 1, 7, and 15, allowing administration roles to be planned with the template. Specify the configuration baseline and management access policy before ordering the rollout quantity.

Lab Traffic Analysis

When a troubleshooting lab needs packet visibility without copying every connection, port mirroring can send traffic from four source ports to one destination port. VLAN mirroring separately supports four source VLANs. Identify the analyzer connection and required observation points before specifying the lab or staging order.

Not Suitable If

PoE power for connected endpoints

SG250-50-K9-UK does not power endpoints over Ethernet. C1200-48P-4G is a current 48-port PoE alternative with four 1G SFP uplinks; size endpoint power requirements separately before ordering.

10G uplinks to upstream switches

SG250-50-K9-UK limits uplinks to 1G. C1200-48T-4X provides 48 Gigabit copper access ports plus four 10G SFP+ uplinks and is the current model at the end of its replacement chain.

Product Comparison Table

Cisco SG250-50-K9-UK 250 48-Port Gigabit Switch, 2x1G Combo UplinksSG250-50-K9-UKCisco SG250-50-K9-NA 250 48-Port Gigabit Switch, 2x1G Combo UplinksSG250-50-K9-NACisco SG250-26P-K9-NA 250 24-Port Gigabit PoE+ Switch, 2x1G Combo UplinksSG250-26P-K9-NACisco SG250-08-K9 250 Smart Switches 8-Port Gigabit Desktop SwitchSG250-08-K9Cisco SG250-10P-K9-NA 250 8-Port Gigabit PoE+ Desktop Switch, 2x1G Combo UplinksSG250-10P-K9-NA
Depth257 mm257 mm257 mm128 mm170 mm
Ethernet TechnologyGigabit EthernetGigabit EthernetGigabit EthernetGigabit EthernetGigabit Ethernet
Form FactorRack-Mount 1URack-Mount 1URack-Mount 1UDesktopDesktop
Height44 mm44 mm44 mm30 mm44 mm
Manufacturer Part NumberSG250-50-K9-UKSG250-50-K9-NASG250-26P-K9-NASG250-08-K9SG250-10P-K9-NA
Power Consumption35.4W35.4W262W7.6W85.19W
Switching Capacity100 Gbps100 Gbps52 Gbps16 Gbps20 Gbps
Weight2.94 kg2.94 kg.3.81 kg.0.54 kg1.2 kg
Width440 mm440 mm440 mm160 mm280 mm

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ISO 27001
ISO 45001
RoHS
REACH
FCC
CE
UKCA
VCCI
ISO 9001
ISO 14001

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Hassle-Free RMA & Returns

If a unit ever falls short, our streamlined RMA process gets a replacement to you fast, with advance replacement available to keep your network running. No jargon, no runaround.

Rigorously Tested & Quality Assured

Every device is inspected, bench-tested, and firmware-verified, with configurations wiped before dispatch. Additional testing can be arranged to confirm full working condition on request.

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Questions & Answers

What does the SG250-50-K9-UK part number mean?

SG250-50-K9-UK identifies a Cisco 250 Series Gigabit smart switch, with 50 logical ports and the UK regional ordering suffix. Those ports comprise 48 dedicated copper ports plus two copper/SFP combinations. The UK form also serves Saudi Arabia, Qatar, Kuwait, Singapore, Hong Kong, and Malaysia.

How is SG250-50-K9-UK managed?

SG250-50-K9-UK supports HTTP/HTTPS browser management, a full or menu-based CLI over SSH or Telnet, SNMP, Smart Network Application, FindIT Network Manager, and Cisco Active Advisor. The embedded FindIT Network Probe supports network-level management without a separate probe appliance; configuration files and firmware can also be transferred through the front USB port.

Is SG250-50-K9-UK discontinued?

SG250-50-K9-UK is discontinued, with end of sale on October 30, 2021 and last Cisco support on October 31, 2026. Cisco software maintenance ended October 30, 2022. The original replacement, CBS250-48T-4G-UK, is also discontinued; the forward replacement chain ends at the current C1200-48T-4G.

Which conditions and warranties does ORM Systems offer for SG250-50-K9-UK?

ORM Systems offers SG250-50-K9-UK new sealed or certified refurbished, with up to 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 hardware warranty is bounded by October 31, 2026, with 1-year fan and power-supply coverage.

Which older switch does SG250-50-K9-UK replace?

SG250-50-K9-UK replaces the discontinued SLM2048T-UK, sold as the SG200-50 50-port Gigabit Smart Switch. Buyers maintaining that older estate should check configuration differences rather than treating the units as identical. The SG250 replacement is itself discontinued, so its support cutoff must be included in the replacement decision.

What is the difference between SG250-50-K9-UK and SG250-50HP-K9-UK?

SG250-50HP-K9-UK provides 48 PoE+ access ports with a shared 192W budget, while SG250-50-K9-UK supplies no endpoint power. Both retain two Gigabit copper/SFP combo connections and both are discontinued. Within an existing legacy estate, the HP version addresses powered endpoints, while the non-PoE version suits independently powered devices.

What is the difference between SG250-50-K9-UK and SG250-26-K9-UK?

SG250-50-K9-UK has 48 dedicated Gigabit copper ports, while SG250-26-K9-UK has 24; each adds two Gigabit copper/SFP combo ports. Both are discontinued members of the Cisco 250 Series. The larger unit addresses denser existing connection requirements, while the smaller model suits legacy installations whose connection schedule fits within 24 access ports.

What is the difference between SG250-50-K9-UK and C1200-48T-4G?

C1200-48T-4G offers four dedicated 1G SFP uplinks, while SG250-50-K9-UK has two 1G copper/SFP combo connections. Both retain 48 dedicated Gigabit copper access ports. C1200-48T-4G is the current successor for new purchases needing separate fiber uplinks; the discontinued SG250 model remains a legacy choice for maintaining an existing installation.

Does SG250-50-K9-UK need an external power adapter?

No, SG250-50-K9-UK uses an internal universal AC power supply rather than an external adapter. The input accepts 100-240V AC at 50-60 Hz, and worst-case consumption reaches 35.4W. The original package includes a power cord and mounting kit, so confirm those items on the selected condition's order.

Which fiber transceivers work with SG250-50-K9-UK?

SG250-50-K9-UK accepts supported Gigabit SFPs, including MGBSX1 for multimode fiber and MGBLX1 for single-mode fiber. MGBSX1 supports a maximum 500 m reach; MGBLX1 supports 10 km. Each SFP shares a logical port with its paired copper connector, so match fiber type, reach, and remote-end optics before ordering.

Can SG250-50-K9-UK route between VLANs?

Yes, SG250-50-K9-UK supports static IPv4 routing with 32 static routes and 16 IP interfaces. Routing interfaces can be assigned to physical ports, link aggregations, VLANs, or loopbacks. This is Layer 2+ functionality rather than dynamic routing; check routed subnet counts and required static entries before assigning the inter-VLAN gateway role.

Is the Cisco SG250-50 fanless?

No, the Cisco SG250-50 uses one cooling fan rather than a fanless enclosure. Acoustic output is 35.1 dB from 0°C to 30°C and 47.5 dB at 50°C. Buyers placing the unit near desks should account for fan noise instead of treating it as a silent desktop switch.

Is SG250-50-K9-UK rack mountable?

Yes, SG250-50-K9-UK fits a standard rack in a 1U enclosure measuring 440 mm wide, 44 mm high, and 257 mm deep. The switch weighs 2.94 kg and originally ships with a mounting kit. Allow space for cabling and airflow when checking the installation position and included mounting hardware.