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SG550X-24-K9-UK
Cisco SG550X-24-K9-UK 550X 24-Port Gigabit Switch, 4x10G Upl...
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SG550X-24-K9-UK supplies managed Layer 2+ connectivity through 24 Gigabit Ethernet access ports and four fixed 10G uplinks for small-business networks. Two uplinks are SFP+ slots, while two are 10GBase-T/SFP+ combo pairs with one active medium per pair. The non-PoE design connects locally powered endpoints rather than supplying power through network cables. A 1U rack-mount chassis places the Cisco 550X Series in a conventional equipment rack, with copper or fiber available for upstream connections without a removable uplink card. The discontinued SG550X-24P-K9-UK sibling adds a 195W shared endpoint-power budget. This model is also discontinued and remains a matching-hardware option for an existing installation rather than the current-generation migration choice.
SG550X-24-K9-UK price for new stock is is available on request. Get immediate quote. SG550X-24-K9-UK refurb price is $2,455.95.
Request bulk order quote for SG550X-24-K9-UK for additional pricing. Browse the full Cisco 550X Series Stackable Managed Switches series or explore all Cisco products.
128 Gbps switching capacity accommodates the combined access and uplink interfaces, while 95.23 Mpps forwarding at 64-byte packet size defines the packet-processing ceiling. Static routing and RIP v2 handle traffic between IPv4 networks; VRRP supports redundant default gateways, and PBR selects next hops by policy. SG550X-24-K9-UK supports 7168 IPv4 routes, establishing the route inventory limit for configuration planning. Its 512 MB of DRAM supports control-plane operation, while 256 MB of flash provides software storage. A dynamically shared 1.5 MB packet buffer handles queued traffic across ports rather than assigning that capacity to each interface. The MAC table holds 16000 learned Ethernet addresses. The 550X Series Stackable Managed Switches support HTTP/HTTPS browser access, Textview CLI and SNMP for administration and monitoring. A dedicated out-of-band Ethernet management port is absent. 33.5W worst-case consumption provides the system-load figure for electrical planning without an endpoint PoE allocation.
SG550X-24-K9-UK is available new sealed or certified refurbished; refurbished units are inspected and bench-tested, including every port linking at rated speed and optics bay recognition, with firmware verified and configurations wiped to factory default. ORM provides up to a 3-year extended warranty on new units or up to 1 year on refurbished units, with 30-day returns on every condition, terms apply; Cisco's separate limited lifetime hardware warranty, where eligible, ends July 31, 2027. Specify condition, accessories and quantity on the PO. Enterprise and volume orders include PO acceptance, Net-30 for government and RMA with advance replacement across UK, EU, US and MEA.
| Key Specs | Key Spec Values |
|---|---|
Port Configuration | 24x1G / 2x10G SFP+ / 2x10G copper/SFP+ combo |
Stacking | Hardware stacking / 8 members |
Max Power Draw | 33.5W |
Replaces | SF550X-24-K9-UK; end of sale June 18, 2020 |
Lifecycle Status | End-of-sale July 30, 2022; support ends July 31, 2027 |
Replacement PID | C1300-24T-4X; intermediate CBS350-24T-4X-UK discontinued |
A branch order serving the United Kingdom, Saudi Arabia, Qatar, Kuwait, Singapore, Hong Kong or Malaysia should retain the UK regional identifier instead of substituting another suffix. Confirm the destination site and supplied power cord on the purchase order before approving a regional stock transfer.
A staging purchase requiring repeatable configuration loading can use the front USB Type-A port and dual software images before equipment reaches its final site. Keep approved image and configuration files with the build record, and specify the console cable and staging quantities before issuing the PO.
A routed-access purchase connecting IPv6 workgroups needs its interface and route counts checked before configuration is standardized. The switch supports 256 IPv6 interfaces and 1792 IPv6 static routes. Count the required networks, next hops and interfaces, then confirm that the planned configuration stays within both limits before the PO.
PoE-powered phones and access points
SG550X-24-K9-UK does not supply endpoint power. C1300-24P-4X provides 24 Gigabit PoE access ports and four 10G SFP+ uplinks; size its power budget separately.
48 wired endpoints in one chassis
SG550X-24-K9-UK provides 24 Gigabit access ports. C1300-48T-4X provides 48 Gigabit access ports with four 10G SFP+ uplinks for a higher-density purchase.
Cisco support after July 2027
Cisco service for SG550X-24-K9-UK ends July 31, 2027. C1300-24T-4X is the current migration endpoint after the discontinued CBS350-24T-4X-UK; specify the required support horizon separately.
Mon–Fri: [09:00-16:00]
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| SG550X-24-K9-UK |  SG550X-24-K9-EU |  SG550X-48-K9-EU |  SG550X-24-K9 |  SG550XG-8F8T-K9 | |
|---|---|---|---|---|---|
| Depth | 257 mm | 257 mm | 257 mm | 257 mm | 350 mm |
| Ethernet Technology | Gigabit Ethernet | Gigabit Ethernet | Gigabit Ethernet | 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 | SG550X-24-K9-UK | SG550X-24-K9-EU | SG550X-48-K9-EU | SG550X-24-K9 | SG550XG-8F8T-K9 |
| Memory | 512 MB | 512 MB | 512 MB | 512 MB | 512 MB |
| Power Consumption | 33.5W | 33.5W | 52W | 33.5W | 84.6W |
| Switching Capacity | 128 Gbps | 128 Gbps | 176 Gbps | 128 Gbps | 320 Gbps |
| Weight | 3.27 kg | 3.27 kg. | 3.73 kg | 3.27 kg | 5.23 kg |
| Width | 440 mm | 440 mm | 440 mm | 440 mm | 440 mm |
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SG550X-24-K9-UK identifies a 550X Gigabit switch with 24 access ports and four 10G uplinks. SG550X names the model family; 24 gives the access-port count; UK selects the regional version for the United Kingdom and several other markets. Retain K9 in the complete ordering identifier.
SG550X-24-K9-UK supports HTTP/HTTPS browser management, Textview CLI through console or SSH/Telnet, and SNMP versions 1, 2c and 3. Network-level options include Smart Network Application, FindIT Network Manager with an embedded FindIT Network Probe, and Active Advisor. Cisco Network Plug and Play supports provisioning; no dedicated out-of-band Ethernet management port is present.
SG550X-24-K9-UK reached end of sale on July 30, 2022, and Cisco support ends July 31, 2027. Software maintenance ended July 30, 2023. The immediate replacement, CBS350-24T-4X-UK, is also discontinued; C1300-24T-4X is the current migration endpoint. Remaining Cisco coverage depends on applicable entitlement and warranty terms.
ORM Systems offers SG550X-24-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. Every condition includes 30-day returns; terms apply. Cisco's limited lifetime hardware warranty is separate, subject to eligibility, and ends July 31, 2027.
SG550X-24-K9-UK replaced SF550X-24-K9-UK, moving 24 access ports from 10/100 to 10/100/1000 Ethernet. SF550X-24-K9-UK ended sale June 18, 2020. Both models are discontinued, so the 550X Gigabit model serves matching-hardware purchases rather than the current generation; C1300-24T-4X is the endpoint of the subsequent migration chain.
SG550X-24-K9-UK has four fixed 10G uplinks: two SFP+ slots and two 10GBase-T/SFP+ combo pairs. Each combo pair activates either copper or fiber, not both. SFP-10G-SR supports multimode fiber, while SFP-10G-LR supports single-mode fiber; order the required optics separately and match both link ends.
The 550X Series supports eight switches in one hardware stack, including mixed SF550X, SG550X, SG550XG and SX550X members. Copper interconnect options include SFP-H10GB-CU1M, SFP-H10GB-CU3M and SFP-H10GB-CU5M for 1 m, 3 m and 5 m connections. Ring and chain arrangements are supported; reserve the chosen 10G interfaces when planning remaining uplinks.
Yes, SG550X-24-K9-UK supports inter-VLAN IPv4 routing with static routes and RIP v2, plus IPv6 static routing. IPv4 capacity reaches 7168 routes and 256 IP interfaces. VRRP supports default-gateway redundancy, while PBR directs selected traffic to configured next hops. Keep route capacity separate from the number of configured interfaces.
SG550X-24-K9-UK runs from an internal universal AC supply accepting 100-240V at 47-63 Hz. Worst-case system consumption is 33.5W, without endpoint PoE output. External redundant-power connectivity is available through an RPS connector rather than a second internal PSU bay. Confirm the supplied power cord and site redundancy requirements before ordering.
SG550X-24P-K9-UK adds a 195W shared PoE budget across 24 Gigabit access ports, while SG550X-24-K9-UK does not power endpoints. Both models are discontinued and belong to the same hardware generation. For matching-hardware replacements, the powered model serves endpoints requiring PoE, while the non-PoE model serves locally powered endpoints.
SG550X-48-K9-UK provides 48 Gigabit access ports, compared with 24 on SG550X-24-K9-UK. Both retain four 10G uplinks and are discontinued. For existing-installation replacements, the 24-port model matches a smaller access-port requirement, while the 48-port model accommodates a larger endpoint count without adding another chassis solely for those access connections.
C1300-24T-4X provides four 10G SFP+ uplinks, while SG550X-24-K9-UK provides two SFP+ uplinks and two 10GBase-T/SFP+ combo uplinks. The 550X model is discontinued, and its intermediate CBS350-24T-4X-UK replacement is also discontinued. The older model serves matching-hardware replacements, whereas the Catalyst 1300 model serves the current migration path.
SG550X-24-K9-UK has 512 MB of DRAM, 256 MB of flash and 1.5 MB of packet buffering. The packet buffer is dynamically shared across all ports rather than reserved per interface. Keep control-plane memory, image storage and packet buffering separate when comparing switches; the three figures describe different resources.
No, SG550X-24-K9-UK uses two fans, including one redundant fan. Acoustic output is 34.2 dB between 0°C and 30°C, and 49.3 dB at 50°C. The 0°C to 50°C operating range and fan-based cooling need to match the installation area; a fanless requirement rules out this model.
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