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SG550XG-48T-K9
Cisco SG550XG-48T-K9 550X 46-Port 10 Gigabit Ethernet Switch...
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SG550XG-48T-K9 is a managed Layer 2+ switch for dense 10 Gigabit Ethernet copper connectivity in small and medium business networks. Forty-six dedicated copper network ports sit alongside two fixed copper/SFP+ combo interfaces, providing 48 active network connections. Each combo interface operates through copper or fiber, not both simultaneously. The Cisco 550X Series supports hardware stacking rather than management-only grouping. A separate Gigabit management interface provides out-of-band access without occupying a network connection. Cisco SG550XG-48T uses a full-width 1U rack chassis and supplies no endpoint PoE power, so connected equipment needs independent power. The discontinued SG550XG-24T-K9-NA provides 24 copper network connections instead of 48, distinguishing the lower-density configuration from this model. Copper and SFP+ network interfaces support both 1G and 10G operation.
SG550XG-48T-K9 price for new stock is $5,244.75. SG550XG-48T-K9 refurb price is $2,362.50. SG550XG-48T-K9 is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for SG550XG-48T-K9 for additional pricing. Browse the full Cisco 550X Series Stackable Managed Switches series or explore all Cisco products.
960 Gbps switching capacity defines the aggregate switching ceiling, while 714.24 Mpps forwarding rate describes packet-handling performance. Static routing and RIP v2 support local IP forwarding; PBR controls next-hop selection, and VRRP provides gateway redundancy. IPv4 routing supports 7168 routes, while IPv6 static routing supports 1792 routes. SG550XG-48T-K9 carries 512 MB of DRAM and 256 MB of flash for control software and stored files. A 4 MB shared packet buffer serves traffic across the network interfaces. Browser administration, a text CLI, and SNMP provide interactive and management-station access. 264.4W worst-case consumption provides the maximum published allowance for electrical planning. Five fans include one redundant fan, and the 0°C to 50°C operating range sets the environmental boundary for rack placement. The internal universal AC supply accepts 100-240V input; power redundancy uses an external connection rather than a second internal power module.
ORM Systems offers SG550XG-48T-K9 new sealed or certified refurbished; refurbished units are inspected and bench-tested for rated-speed port links, optics bay recognition, PSU status, fan status, and clean boot, with firmware verified and configuration wiped to factory default. ORM warranties are up to a 3-year extended term for new units and up to 1 year for certified refurbished units; both conditions have 30-day returns, terms apply, while Cisco service ended June 30, 2025. Specify condition, regional power requirements, and required accessories on the PO. For enterprise and volume orders, PO accepted, Net-30 for government, and RMA with advance replacement are available, with regional stock and RMA in the UK, EU, US, and MEA.
| Key Specs | Key Spec Values |
|---|---|
Port Configuration | 46 x 10G copper / 2 x 10G copper/SFP+ combo |
Stacking | Hardware stacking / 8 members |
Max Power Draw | 264.4W |
Cooling | 5 fans / 1 redundant |
Lifecycle Status | End of sale June 18, 2020; support ended June 30, 2025 |
Replacement PID | SX550X-52-K9-NA (discontinued); no current successor |
When VLAN separation also requires local IP gateways, the switch supports 256 IP interfaces. Map the planned gateways and management interfaces before committing hardware rather than sizing only by connector count. Include the intended interface inventory and addressing plan in the configuration requirements attached to the PO.
When a replacement unit must be staged before a maintenance window, dual software images support separate image selection during upgrade preparation. Build the staging checklist around the intended boot image, saved configuration, and recovery procedure, then specify the required starting configuration before the purchase order is released.
When an existing fleet spans US and overseas locations, a common base identifier does not specify the regional order. SG550XG-48T-K9-NA is the North American form, while regional suffixes vary by destination. Put each destination and the required power-cord region on the PO rather than assuming one regional order covers every site.
PoE power for connected endpoints
The copper network interfaces provide data connectivity without PoE output. Phones, access points, and other powered devices therefore require independent power or a separately selected PoE switching solution.
Independent fiber uplinks alongside all copper ports
The two SFP+ interfaces share their connections with two copper interfaces. Activating both fiber interfaces leaves 46 copper network connections; the fiber interfaces do not add independent connections.
Active Cisco service for production deployment
Cisco service ended June 30, 2025. The replacement chain ends at discontinued CBS350-48XT-4X-NA, for which no migration product is available, rather than an orderable current successor.
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| SG550XG-48T-K9 |  SG550XG-24T-K9 |  SG550XG-24T-K9-EU |  SG550X-48-K9-EU |  SG550XG-8F8T | |
|---|---|---|---|---|---|
| Depth | 450 mm | 450 mm | 450 mm | 257 mm | 350 mm |
| Ethernet Technology | 10 Gigabit Ethernet | 10 Gigabit Ethernet | 10 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 | SG550XG-48T-K9 | SG550XG-24T-K9 | SG550XG-24T-K9-EU | SG550X-48-K9-EU | SG550XG-8F8T |
| Memory | 512 MB | 512 MB | 512 MB | 512 MB | 512 MB |
| Power Consumption | 264.4W | 143.9W | 143.9W | 52W | 84.6W |
| Switching Capacity | 960 Gbps | 480 Gbps | 480 Gbps | 176 Gbps | 320 Gbps |
| Weight | 7.43 kg | 6.38 kg | 6.38 kg | 3.73 kg | 5.23 kg. |
| Width | 440 mm | 440 mm | 440 mm | 440 mm | 440 mm |
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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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SG550XG-48T-K9 identifies the 550X family's 48-port 10GBASE-T stackable managed switch. The 48T portion corresponds to 48 copper network interfaces, including two shared SFP+ combo pairs. SG550XG-48T-K9-NA is the North American ordering form; the added -NA suffix specifies the region rather than a different port configuration.
SG550XG-48T-K9 supports an HTTP/HTTPS web interface, console CLI, SSH/Telnet access, SNMP, Smart Network Application, FindIT Network Manager with an embedded FindIT Network Probe, and Active Advisor. The CLI provides full and menu modes, while the dedicated Gigabit management port separates out-of-band administration from network connections.
SG550XG-48T-K9 reached end of sale on June 18, 2020, and Cisco support ended June 30, 2025. Software maintenance releases ended June 18, 2021. The product is discontinued, and purchasing remaining new sealed inventory does not restart Cisco service or reset those lifecycle milestones.
ORM Systems offers SG550XG-48T-K9 new sealed with up to a 3-year extended warranty, or certified refurbished with up to 1 year. Both conditions have 30-day returns; terms apply. Cisco's original limited lifetime hardware warranty no longer provides service because Cisco support ended June 30, 2025.
No, SG550XG-48T-K9 cannot operate all 48 copper interfaces and both SFP+ interfaces simultaneously because two copper connections share combo interfaces with SFP+. Using both fiber interfaces leaves 46 copper connections active. Specify the intended copper-versus-fiber allocation before assigning connections or ordering the required transceivers.
SG550XG-48T-K9 supports eight-member hardware stacking using standard 10G interfaces in ring or chain arrangements. Supported copper SFP+ cables include SFP-H10GB-CU1M, SFP-H10GB-CU3M, and SFP-H10GB-CU5M. SF550X, SG550X, SG550XG, and SX550X models can share a stack; reserve network interfaces for the interconnects rather than assigning every connection to endpoints.
SG550XG-48T-K9 provides Layer 2+ routing through static routes and RIP v2, with PBR for next-hop control and VRRP for gateway redundancy. IPv4 routing supports 7168 routes, while IPv6 static routing supports 1792 routes. Size the intended routing configuration against these limits before consolidating local gateways onto the switch.
No, the Cisco SG550XG-48T has an internal universal AC supply rather than two redundant internal power modules. Power redundancy uses the external RPS connection. The internal supply accepts 100-240V AC, so an external redundancy requirement must be specified separately rather than assumed to ship inside the chassis.
Yes, the Cisco SG550XG-48T is a full-width 1U rack-mount switch measuring 440 mm wide, 44 mm high, and 450 mm deep, with a weight of 7.43 kg. A mounting kit is included in the original package; confirm the supplied mounting hardware when specifying the required order condition.
SG550XG-48T-K9 provides no PoE output, whereas the discontinued SG550X-48P-K9-NA provides PoE+ with a shared 382W budget. Endpoint power requirements distinguish these configurations: the former suits independently powered equipment, while the latter addresses powered access connections but is discontinued rather than a current migration recommendation.
SG550XG-48T-K9 provides 48 copper network connections, whereas the discontinued SG550XG-24T-K9-NA provides 24. Connector density is the distinction for an existing installation: the larger model accommodates a higher copper connection count, while the smaller configuration corresponds to lower-density requirements. Both models are discontinued, not current-generation migration choices.
SG550XG-48T-K9 has two SFP+ combo connections shared with copper interfaces, whereas the discontinued SX550X-52-K9-NA has four dedicated 10G SFP+ connections. The former matches installations using shared copper/fiber interfaces; the latter supports separate fiber uplinks without consuming copper connections, but is a historical replacement rather than a current successor.
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