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SG550X-48MP-K9-UK
Cisco SG550X-48MP-K9-UK 550X 48-Port Gigabit PoE+ Switch, 4x...
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SG550X-48MP-K9-UK delivers 48 Gigabit PoE+ access connections and fixed 10G uplinks in a managed, stackable Layer 2+ switch for small and medium businesses. Four uplink connections combine two dedicated SFP+ cages with two copper/SFP+ combo connections; each combo uses only one medium at a time. The rack-mount 1U chassis belongs to the Cisco 550X Series Stackable Managed Switches and serves IP phones, wireless access points and surveillance cameras at the business access edge. Cisco SG550X-48MP supports a single-device view of multiple stacked switches rather than separate administration of each member. Compared with the discontinued SG550X-48P-K9-UK, this model provides a larger endpoint-power allocation without increasing the access-port count.
SG550X-48MP-K9-UK price for new stock is is available on request. Get immediate quote. SG550X-48MP-K9-UK refurb price is $1,256.72.
Request bulk order quote for SG550X-48MP-K9-UK for additional pricing. Browse the full Cisco 550X Series Stackable Managed Switches series or explore all Cisco products.
176 Gbps switching capacity provides nonblocking forwarding across the installed interfaces. 130.94 Mpps forwarding with 64-byte packets defines the small-packet processing ceiling. 740W of shared PoE power must be allocated across the endpoint mix rather than assumed available at every port's maximum output. Static routing and RIP v2 handle inter-VLAN reachability, while PBR selects next hops through policy and VRRP provides redundant gateway operation. SG550X-48MP-K9-UK carries 512 MB of DRAM and 256 MB of flash for its embedded management and image storage. A dynamically shared 3 MB packet buffer serves the complete port set rather than reserving that amount for each interface. Browser administration, Textview CLI and SNMP provide configuration paths for this Gigabit PoE+ access switch, including scripted and interactive administration. Dual internal redundant supplies are not provided; redundant power uses an external RPS2300 connection.
Order SG550X-48MP-K9-UK in new sealed or certified refurbished condition, specifying quantities and condition on the PO. Refurbished units are inspected and bench-tested, with PoE output verified under load on every powered port, 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 certified refurbished units, plus 30-day returns on every condition, terms apply; Cisco's limited lifetime hardware warranty ends no later than July 31, 2027. Enterprise and volume orders support PO acceptance, Net-30 for government and RMA with advance replacement, with regional stock and RMA in the UK, EU, US and MEA.
| Key Specs | Key Spec Values |
|---|---|
Port Configuration | 48x1G PoE+ / 2x10G SFP+ / 2x10G copper/SFP+ combo |
PoE Budget | 740W shared |
Stacking | Hardware stacking / 8 members |
Replaces | Discontinued SF550X-48MP-K9-UK; end of sale June 18, 2020 |
Lifecycle Status | End of sale July 30, 2022; support ends July 31, 2027 |
Replacement PID | C1300-48FP-4X via discontinued CBS350-48FP-4X-UK |
When an installation mixes standard powered endpoints with higher-draw devices, 16 access ports can supply 60W each, subject to the switch's shared allocation. The remaining powered ports support 30W each. Separate the higher-draw endpoints from the general port count and confirm their individual power requirements before setting the switch quantity.
A branch adding separate addressing for voice, cameras and business users can place IPv4 gateways on physical ports, link aggregation groups or VLAN interfaces. The switch supports 256 IP interfaces and IPv6 static routing. Map the required interfaces and next hops, then include the intended configuration in the purchase specification.
When a rollout depends on a common security policy, the switch supports 3000 access-control entries with ingress and egress application. Time-based rules can restrict access during defined periods. Build the required rule set in staging and confirm that the combined policy fits the entry limit before fixing the order quantity.
Maximum PoE+ draw across every port
The 740W allocation is shared across all powered ports, not reserved per port. Simultaneous maximum-power operation across every access connection exceeds that available allocation.
Cisco support beyond July 2027
Cisco support ends July 31, 2027, limiting the support horizon. C1300-48FP-4X is the current successor after the discontinued CBS350-48FP-4X-UK.
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| SG550X-48MP-K9-UK |  SG550XG-48T-K9-UK |  SG550XG-24T-K9 |  SG550X-24P-K9-NA |  SG550X-48P-K9-NA | |
|---|---|---|---|---|---|
| Depth | 450 mm | 450 mm | 450 mm | 350 mm | 350 mm |
| Ethernet Technology | Gigabit Ethernet | 10 Gigabit Ethernet | 10 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 | Rack-Mount 1U | Rack-Mount 1U | Rack-Mount 1U |
| Height | 44 mm | 44 mm | 44 mm | 44 mm | 44 mm |
| Manufacturer Part Number | SG550X-48MP-K9-UK | SG550XG-48T-K9-UK | SG550XG-24T-K9 | SG550X-24P-K9-NA | SG550X-48P-K9-NA |
| Memory | 512 MB | 512 MB | 512 MB | 512 MB | 512 MB |
| Power Consumption | 893.1W | 264.4W | 143.9W | 269.2W | 494.3W |
| Switching Capacity | 176 Gbps | 960 Gbps | 480 Gbps | 128 Gbps | 176 Gbps |
| Weight | 6.69 kg | 7.43 kg. | 6.38 kg | 4.72 kg | 5.82 kg. |
| Width | 440 mm | 440 mm | 440 mm | 440 mm | 440 mm |
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SG550X-48MP-K9-UK identifies the 48-port Gigabit PoE+ member of the Cisco 550X Series with a 740W power budget. SG550X selects the Gigabit family, 48MP selects this powered configuration, and UK identifies the regional form for the United Kingdom, Saudi Arabia, Qatar, Kuwait, Singapore, Hong Kong and Malaysia.
SG550X-48MP-K9-UK is managed through its HTTP/HTTPS web interface, Textview CLI over console, SSH or Telnet, and SNMP. Smart Network Application supplies embedded network-level management. FindIT Network Manager, the embedded FindIT probe, FindIT discovery and Active Advisor provide additional integration paths, while CLI scripting supports repeatable configuration alongside interactive administration.
SG550X-48MP-K9-UK is discontinued: Cisco ended sales on July 30, 2022, stopped software maintenance on July 30, 2023, and set July 31, 2027, as the last date of support. The original replacement, CBS350-48FP-4X-UK, is also discontinued; the current migration chain ends at C1300-48FP-4X.
ORM offers SG550X-48MP-K9-UK new sealed or certified refurbished, with up to a 3-year extended warranty for new units or up to 1 year for certified refurbished units. Both conditions have 30-day returns, terms apply. Cisco's separate limited lifetime hardware warranty is subject to eligibility and cannot extend beyond July 31, 2027.
740W is the shared PoE budget of SG550X-48MP-K9-UK, covering 48 powered access ports. Sixteen ports support 60W PoE, while the other powered ports deliver a maximum of 30W each, subject to that shared allocation. Endpoint demand must be sized collectively; every port cannot operate at its individual maximum simultaneously.
SG550X-48MP-K9-UK has four fixed 10G uplinks: two dedicated SFP+ ports and two copper/SFP+ combo ports. Each combo pair permits only one medium at a time. Fiber links use compatible optics such as SFP-10G-SR for multimode or SFP-10G-LR for single-mode connections, ordered separately. These interfaces also support 1G operation.
SG550X-48MP-K9-UK can join an eight-member hardware stack using standard 10G fiber or copper interfaces in a ring or chain. SFP-H10GB-CU1M, SFP-H10GB-CU3M and SFP-H10GB-CU5M provide 1 m, 3 m and 5 m direct-attach cable choices. Reserve network interfaces for these interconnects when planning the remaining uplink connections.
Static routing and RIP v2 are available on SG550X-48MP-K9-UK, with PBR and VRRP for policy and gateway redundancy. The switch supports 7168 IPv4 routes, 1792 IPv6 static routes and 256 IP interfaces. Routing interfaces can be physical ports, link aggregation groups or VLAN interfaces, specified against the intended addressing design.
No, SG550X-48MP-K9-UK does not include dual internal redundant power supplies; redundancy uses an external RPS2300 connection. The internal AC input accepts 100-240V AC, and RPS2300 can connect to six 550X switches. An existing redundant-power installation therefore needs its RPS2300 connections reviewed separately from the switch's normal AC feed.
SG550X-48MP-K9-UK replaces the discontinued SF550X-48MP-K9-UK, which reached end of sale on June 18, 2020. That older model provides 48 Fast Ethernet PoE+ access ports, while the replacement provides Gigabit access connections. SG550X-48MP-K9-UK is itself discontinued, so a lifecycle-led refresh should continue forward to the current C1300-48FP-4X.
SG550X-48MP-K9-UK provides a 740W PoE budget, where SG550X-48P-K9-UK provides 382W for its 48 powered access ports. Both models are discontinued. The higher-budget model suits spares for installations with greater endpoint power demand; the 382W variant suits retained installations whose powered-device load fits its smaller shared allocation.
SG550X-48MP-K9-UK provides 48 Gigabit access ports, where SG550X-24MPP-K9-UK provides 24; both have 740W shared PoE budgets. The 48-port model suits existing installations needing more endpoint connections, while the 24-port version serves lower-density retained layouts. Both are discontinued, and stacking does not remove each unit's individual power-sizing requirement.
C1300-48FP-4X provides four 10G SFP+ uplinks, where SG550X-48MP-K9-UK combines two dedicated SFP+ connections with two copper/SFP+ combo uplinks. SG550X-48MP-K9-UK suits existing 550X installations that need the original uplink arrangement; C1300-48FP-4X suits a current successor order. The intermediate CBS350-48FP-4X-UK is also discontinued and is not the current successor.
Cisco SG550X-48MP is a rack-mount 1U switch measuring 440 mm wide, 44 mm high and 450 mm deep, weighing 6.69 kg. A mounting kit is included, and cooling uses 4 operating fans with 1 redundant fan. Check rack depth, airflow clearance and the complete accessory bundle before placing the order.
Cisco SG550X-48MP switches at 176 Gbps and forwards 130.94 Mpps with 64-byte packets. A dynamically shared 3 MB packet buffer serves the complete port set rather than providing that amount per port. The switch also supports 4094 active VLANs, so segmentation and traffic load need separate planning from physical port availability.
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