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SG550X-48P-K9-NA
Cisco SG550X-48P-K9-NA 550X 48-Port Gigabit PoE+ Switch, 4x1...
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SG550X-48P-K9-NA combines hardware stacking with 48 Gigabit Ethernet PoE+ access ports in a managed, Layer 2+ rack-mount switch. Four fixed 10G uplinks comprise two dedicated SFP+ cages and two shared 10GBASE-T/SFP+ connections; each shared connection uses either copper or fiber, not both simultaneously. The Cisco 550X Series serves small and medium business networks connecting phones, wireless access points and surveillance cameras. The discontinued SG550X-48MP-K9-NA sibling increases the shared power allocation to 740W without adding access ports. The SG550X-48P occupies 1U and includes a mounting kit for installation in a standard equipment rack. Voice VLAN handling separates telephone traffic, while private VLANs and port-based access controls provide configuration options for networks carrying different endpoint types on the same access hardware.
SG550X-48P-K9-NA price for new stock is $1,989.75, a 63.2% saving from the Cisco list price of $5,400.00. SG550X-48P-K9-NA refurb price is $3,402.00. SG550X-48P-K9-NA is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for SG550X-48P-K9-NA for additional pricing. Browse the full Cisco 550X Series Stackable Managed Switches series or explore all Cisco products.
176 Gbps switching capacity supports local switching across the access and uplink interfaces. 130.94 Mpps forwarding at 64-byte packets provides the packet-rate figure for traffic sizing. 382W of shared PoE power requires allocation across connected endpoints rather than assuming simultaneous maximum output on every port. Static routing, RIP v2, VRRP v2 and v3, and PBR support inter-VLAN forwarding and gateway policies within a 7168-route IPv4 limit. SG550X-48P-K9-NA carries 512 MB of DRAM and 256 MB of flash for operation and software storage. A 3 MB packet buffer is shared across ports, while the MAC table accommodates 16000 addresses. Browser management, Textview CLI and SNMP provide separate configuration and monitoring paths. Four cooling fans include one redundant fan. Redundant power uses an external RPS2300 rather than a second internal supply. 494.3W worst-case consumption with PoE at 110V is the loaded figure to use when sizing AC circuits and backup power.
Specify SG550X-48P-K9-NA as new sealed or certified refurbished, and put the required condition, quantity and accessories on the purchase order. Certified refurbished units are inspected and bench-tested, with firmware verified, configurations wiped to factory default, and PoE output verified under load on every powered port. ORM provides up to a 3-year extended warranty for new units or up to 1 year for certified refurbished units, plus 30-day returns on either condition, terms apply; Cisco's limited lifetime warranty is eligibility-dependent and Cisco service ends July 31, 2027. Enterprise and volume orders support PO acceptance, government Net-30, and RMA with advance replacement across UK, EU, US and MEA.
| Key Specs | Key Spec Values |
|---|---|
Port Configuration | 48 x 1G PoE+, 2 x 10G SFP+, 2 x 10G Combo |
PoE Budget | 382W shared |
Stacking | Hardware stacking, eight members |
Replaces | SF550X-48P-K9-NA; end of sale June 18, 2020. |
Lifecycle Status | End of sale July 30, 2022. |
Replacement PID | C1300-48P-4X; via discontinued CBS350-48P-4X-NA. |
When a rollout includes high-draw access points or compact downstream switches, 16 access ports can supply 60W PoE, while the remaining powered ports are limited to 30W each. The higher per-port capability does not remove the shared power constraint. Specify endpoint demand and verify the powered-port map before the PO.
When VLAN gateways are moving onto the access switch, interface and address-family limits become procurement constraints. The 550X supports 256 IPv4 interfaces and 1792 IPv6 static routes. Prepare the required gateway inventory and IPv6 route list, then check those totals before specifying the hardware quantity.
When switches are purchased for a staging pool, administrative access and image handling need a common procedure. CLI privilege levels 1, 7 and 15 support differentiated access, and dual software images allow separate image storage. Specify the staging access roles and approved software image before releasing the purchase order.
2.5G access for wireless endpoints
SG550X-48P-K9-NA limits access connections to 1GbE. C1300-24MGP-4X provides eight 2.5GbE access ports and 16 Gigabit ports, but reduces total access density to 24 ports.
Cisco support beyond July 2027
Cisco support for SG550X-48P-K9-NA ends July 31, 2027. C1300-48P-4X is the current migration endpoint; retaining the older hardware does not extend that deadline.
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| SG550X-48P-K9-NA |  SG550XG-48T-K9-EU |  SG550X-24MPP |  SG550X-24MPP-K9-EU |  SG550XG-24F-K9-NA | |
|---|---|---|---|---|---|
| Depth | 350 mm | 450 mm | 450 mm | 450 mm | 350 mm |
| Ethernet Technology | Gigabit Ethernet | 10 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-48P-K9-NA | SG550XG-48T-K9-EU | SG550X-24MPP | SG550X-24MPP-K9-EU | SG550XG-24F-K9-NA |
| Memory | 512 MB | 512 MB | 512 MB | 512 MB | 512 MB |
| Power Consumption | 494.3W | 264.4W | 870.1W | 870.1W | 77.5W |
| Switching Capacity | 176 Gbps | 960 Gbps | 128 Gbps | 128 Gbps | 480 Gbps |
| Weight | 5.82 kg. | 7.43 kg | 6.19 kg | 6.19 kg | 4.16 kg |
| Width | 440 mm | 440 mm | 440 mm | 440 mm | 440 mm |
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SG550X-48P-K9-NA identifies a 550X Gigabit stackable model: 48 denotes the access port count, P denotes PoE+, and NA selects the regional version for the USA, Canada, Mexico, Colombia, Chile and the rest of Latin America. The configuration includes a 382W PoE allocation and fixed 10G uplinks.
SG550X-48P-K9-NA is managed through HTTP/HTTPS web access, Textview CLI over console, SSH or Telnet, and SNMP v1, v2c or v3. Network-level options include Smart Network Application, FindIT Network Manager with an embedded FindIT Network Probe, Active Advisor, and Network Plug and Play with PnP Connect; FindIT Network Discovery Utility handles discovery.
SG550X-48P-K9-NA ended sale July 30, 2022; software maintenance ended July 30, 2023, and Cisco support ends July 31, 2027. Its immediate replacement, CBS350-48P-4X-NA, also ended sale October 29, 2024. The forward migration chain now ends at C1300-48P-4X, rather than the discontinued CBS350 model.
SG550X-48P-K9-NA is offered new sealed or certified refurbished, with ORM coverage of up to 3 years extended for new units or up to 1 year for refurbished units. Both conditions include 30-day returns; terms apply. Cisco's platform warranty is limited lifetime, subject to eligibility, and Cisco service ends July 31, 2027.
SG550X-48P-K9-NA replaces the discontinued SF550X-48P-K9-NA, which ended sale June 18, 2020. The earlier model provides 48 Fast Ethernet access ports, whereas the SG model provides 48 Gigabit access ports. This is a legacy replacement relationship; current-model migration continues through the discontinued CBS350-48P-4X-NA to C1300-48P-4X.
SG550X-48P-K9-NA provides a shared 382W PoE budget across 48 powered access ports, with 16 ports supporting 60W and the others supporting 30W. Those are per-port ceilings, not a simultaneous full-load guarantee. Allocate connected endpoint demand against the shared budget before finalizing the power plan.
SG550X-48P-K9-NA has four fixed 10G uplinks: two dedicated SFP+ ports and two 10GBASE-T/SFP+ combo ports. Each combo connection activates either copper or fiber. SFP-10G-SR supports multimode fiber, while SFP-10G-LR supports single-mode fiber; select optics to match the link distance, fiber plant and remote interface.
550X hardware stacking supports eight members using 10G copper or fiber interconnects in ring or chain topologies. Compatible legacy families include SF550X, SG550X, SG550XG and SX550X. Supported direct-attach connections include SFP-H10GB-CU1M, SFP-H10GB-CU3M and SFP-H10GB-CU5M; reserve interfaces for interconnects rather than assuming every interface remains available for uplinks.
The 550X supports static routing, RIP v2, VRRP v2 and v3, and PBR, with 7168 IPv4 routes. Layer 2+ describes this static and RIP-routed capability. Routed interfaces can be physical ports, LAGs, VLAN interfaces or loopbacks; routing requirements must fit those protocols and the available interface and route limits.
Cisco SG550X-48P uses an internal 100-240V AC supply; redundant power requires the external RPS2300 system rather than a second internal supply. Worst-case consumption with PoE is 494.3W at 110V or 483.1W at 220V. Size AC circuits and backup capacity using the loaded figure, not just the endpoint PoE budget.
Cisco SG550X-48P provides 176 Gbps switching capacity and 130.94 Mpps forwarding at 64-byte packets. Memory resources comprise 512 MB of DRAM, 256 MB of flash and a 3 MB packet buffer shared across ports. The MAC table holds 16000 entries, so address-scale requirements should be checked alongside port and traffic requirements.
SG550X-48P-K9-NA supplies 382W for PoE, whereas SG550X-48MP-K9-NA supplies 740W. Both retain 48 Gigabit access ports, and both are discontinued. The 382W version fits lower aggregate endpoint loads; the 740W version addresses higher aggregate power demand in matching legacy installations without changing access port density.
SG550X-48P-K9-NA has 48 Gigabit access ports, while SG550X-24P-K9-NA has 24. Both are discontinued 550X models. The 48-port version serves legacy replacement orders requiring more endpoint connections; the 24-port version suits lower-density existing installations where matching installed hardware, rather than purchasing a current-generation model, drives procurement.
C1300-48P-4X has four 10G SFP+ uplinks, while SG550X-48P-K9-NA combines two dedicated SFP+ uplinks with two 10GBASE-T/SFP+ combo uplinks. SG550X-48P-K9-NA is discontinued, and C1300-48P-4X is the current migration endpoint through discontinued CBS350-48P-4X-NA. The older model suits matching legacy hardware; the Catalyst model suits current-model procurement.
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