Featured Deal
Hand-picked by our procurement team for standout value. This unit is offered at our sharpest price on current stock, verified against live market rates.
Name:
Added to cart 28 times recently
Ready to Ship
Certified Refurbished
Professionally inspected, bench-tested, and firmware-verified, with configurations wiped. Restored to full working order and backed by our warranty.
$386.42
Quantity:
3 Year Extended Warranty
Same-day Shipping
30-Day Money Back Guarantee
Shipping:
Payment:
3 Year Extended Warranty
Same-day Shipping
30-Day Money Back Guarantee
Need Additional Discount on Product?
Request a quote below - Get Exclusive Pricing and Support.
Shipping:
Payment:
SG550X-48-K9-EU
Cisco SG550X-48-K9-EU 550X 48-Port Gigabit Switch, 4x10G Upl...
Trusted by the Highest-Stakes Buyers
Federal agencies and Fortune 500 operations source through ORM Systems.
US Government & Defense
Enterprise Clients
Built Global. Stocked Local.
Regional teams and 25+ distribution partners keep stock near you and accountability in your time zone.
Buyer Protection on Every Order
Pay by PayPal or Revolut with full chargeback rights. Order on PO terms, Net-30 for government.
Verified By Federal Bodies
Every registration we claim is public record — check our federal contractor status yourself before you spend a dollar.
Since 2016, Enterprise-Trusted
Ten years serving buyers who audit their vendors. From federal agencies to 20,000+ enterprise clients worldwide.
SG550X-48-K9-EU is a managed Layer 2+ access switch with 48 Gigabit Ethernet access ports and four fixed 10G uplinks for small-business networks. Two uplinks use dedicated SFP+ cages; two provide a copper/SFP+ combo connection, with only one medium active per shared interface. The non-PoE hardware connects separately powered endpoints rather than supplying power to attached phones, cameras, or access points. Its 1U rack-mount chassis belongs to the Cisco 550X Series Stackable Managed Switches. Within that discontinued family, SG550X-48P-K9-EU is the PoE+ counterpart. This model instead serves installations where endpoint power comes from local adapters or other equipment, while the higher-speed connections carry traffic toward aggregation.
SG550X-48-K9-EU price for new stock is is available on request. Get immediate quote. SG550X-48-K9-EU refurb price is $386.42.
Request bulk order quote for SG550X-48-K9-EU for additional pricing. Browse the full Cisco 550X Series Stackable Managed Switches series or explore all Cisco products.
176 Gbps switching capacity supports nonblocking traffic handling, while 130.94 Mpps forwarding measures throughput with 64-byte packets. Static IPv4 and IPv6 routing provides inter-VLAN connectivity; RIP v2 supplies dynamic route exchange, VRRP v2/v3 supports gateway redundancy, and PBR controls next-hop selection. The IPv4 routing limit is 7168 routes, which should bound the intended route population rather than an assumed enterprise routing scale. SG550X-48-K9-EU combines 512 MB of DRAM with 256 MB of flash and a dynamically shared 3 MB packet buffer. STP/RSTP/MSTP provides loop control, and LACP supports aggregated links. The SG550X-48 hardware also accommodates 4094 active VLANs and 3000 ACL entries for segmentation and traffic filtering. HTTP/HTTPS configuration and a scriptable CLI provide browser-based and command-line administration. 52W worst-case consumption at 110V provides the chassis load for electrical planning without adding an endpoint-power allowance. Two fans include one redundant fan; the chassis does not provide a second internal PSU bay.
Order SG550X-48-K9-EU new sealed or certified refurbished, specifying the condition, regional power cord, and selected link components on the PO. Certified refurbished units are inspected and bench-tested for power-on and POST, clean boot, every port linking at rated speed, optics bay recognition, PSU status, and fan status; firmware is verified and configuration wiped to factory default. ORM provides up to a 3-year extended warranty for new units and up to 1 year for certified refurbished units, plus 30-day returns on every condition, terms apply; Cisco's limited lifetime coverage ends July 31, 2027. Enterprise and volume orders support PO acceptance, Net-30 for government, and RMA with advance replacement, with regional stock and RMA across the UK, EU, US, and MEA.
| Key Specs | Key Spec Values |
|---|---|
Port Configuration | 48 x 1G / 4 x 10G including two combo |
Stacking | Hardware stacking / 8 members |
Max Power Draw | 52W |
Replaces | SF550X-48-K9-EU / end of sale June 18, 2020 |
Lifecycle Status | End of sale July 30, 2022 |
Replacement PID | C1300-48T-4X |
For an installed SF550X-48-K9-EU replacement, SG550X-48-K9-EU is a migration option. The older Fast Ethernet model reached end of sale on June 18, 2020. Inventory endpoint assignments and the existing configuration, then specify the regional hardware form and migration cabling before the purchase order.
When extending an existing 550X stack, supported mixed families include SF550X, SG550X, SG550XG, and SX550X. Ring and chain arrangements are available, and the system can manage 400 ports. Confirm member identities and reserve the chosen interconnect ports before ordering cables for the intended topology.
For bench staging before a site shipment, dual firmware images allow separate image preparation, while the front USB Type-A slot supports file and image handling. A physical RJ-45 console connection is available for local access. Specify the staging image, configuration handoff, and required console connectivity on the PO.
Ethernet power for attached endpoints
Endpoint power must come from separate equipment because this model supplies no PoE. C1300-48P-4X is the current 48-port Gigabit PoE migration option with four 10G uplinks.
Two hot-swappable internal power supplies
The chassis uses one internal AC supply rather than two hot-swappable PSU bays. A requirement for two redundant internal supply modules cannot be met by this hardware.
Cisco support beyond July 2027
Cisco support ends July 31, 2027. For procurement requiring a current replacement rather than this discontinued model, C1300-48T-4X is the endpoint of the replacement chain.
Mon–Fri: [09:00-16:00]
Avg. response under 30 mins
| SG550X-48-K9-EU |  SG550XG-24T |  SG550XG-8F8T |  SG550XG-24F-K9-UK |  SG550X-48MP-K9-UK | |
|---|---|---|---|---|---|
| Depth | 257 mm | 450 mm | 350 mm | 350 mm | 450 mm |
| Ethernet Technology | Gigabit Ethernet | 10 Gigabit Ethernet | 10 Gigabit Ethernet | 10 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-48-K9-EU | SG550XG-24T | SG550XG-8F8T | SG550XG-24F-K9-UK | SG550X-48MP-K9-UK |
| Memory | 512 MB | 512 MB | 512 MB | 512 MB | 512 MB |
| Power Consumption | 52W | 143.9W | 84.6W | 77.5W | 893.1W |
| Switching Capacity | 176 Gbps | 480 Gbps | 320 Gbps | 480 Gbps | 176 Gbps |
| Weight | 3.73 kg | 6.38 kg | 5.23 kg. | 4.16 kg. | 6.69 kg |
| Width | 440 mm | 440 mm | 440 mm | 440 mm | 440 mm |
Every unit is authentic, sourced through trusted and authorised channels, and serial-verified on request. Genuine networking and IT hardware, guaranteed, or your money back.
New products are backed by up to 3 years of extended warranty, and certified refurbished units by up to 3 months, for dependable protection on every order. Coverage is clear, honoured in full, and confirmed on each product page.
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.
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.
Our specialists assist with compatibility, configuration, licensing, and installation, before and after you buy. Real hardware expertise, whenever you need it.
dispatched quickly and shipped worldwide from regional hubs, fully tracked and insured.
SG550X-48-K9-EU identifies the Gigabit 550X model with 48 access ports and the EU regional ordering suffix. SG550X denotes the model family; 48 denotes access-port count; K9 remains part of the complete ordering identity. EU covers the European Union and additional regional markets, rather than indicating a different port configuration.
SG550X-48-K9-EU supports an HTTP/HTTPS web interface, full or menu CLI through console, SSH or Telnet, and SNMP management. Additional options include Smart Network Application, FindIT Network Manager with an embedded FindIT Network Probe, Active Advisor, and Cisco Network Plug and Play. These provide device configuration, monitoring, and provisioning paths.
SG550X-48-K9-EU provides four fixed 10G uplinks: two dedicated SFP+ interfaces and two copper/SFP+ combo interfaces. Each combo interface permits either its copper connection or its SFP+ connection to operate, not both simultaneously. Fiber deployments can use SFP-10G-SR or SFP-10G-LR with matching fiber cabling specified separately.
Cisco 550X hardware stacking supports eight members managed as one system. Standard 10G copper or fiber links carry the interconnects; SFP-H10GB-CU1M, SFP-H10GB-CU3M, and SFP-H10GB-CU5M are supported direct-attach cable options. Ring or chain topology and aggregated interconnects determine which network ports must be reserved for the stack.
SG550X-48-K9-EU supports static IPv4 and IPv6 routing, RIP v2, VRRP v2/v3, and PBR. IPv4 routing accommodates 7168 routes; IPv6 static routing accommodates 1792 routes, with 256 interfaces supported for each address family. Specify the required routing behavior and interface allocation before replacing an existing gateway.
The Cisco SG550X-48 uses an internal universal AC supply accepting 100-240V AC, with external redundant-power connectivity rather than a second internal PSU bay. Worst-case system consumption is 52W at 110V or 51.8W at 220V. Electrical sizing therefore uses chassis consumption without an attached-device PoE load.
SG550X-48-K9-EU reached end of sale on July 30, 2022, with Cisco's last support date set for July 31, 2027. Software maintenance ended July 30, 2023. The direct replacement, CBS350-48T-4X-EU, is also discontinued; its replacement is C1300-48T-4X, the current migration endpoint for buyers requiring a current model.
SG550X-48-K9-EU replaces SF550X-48-K9-EU, the older 48-port Fast Ethernet switch that reached end of sale on June 18, 2020. The replacement changes endpoint connectivity from 10/100 to Gigabit while retaining the stackable business-switch role. Both models are now discontinued, separating a legacy replacement purchase from current-model procurement.
SG550X-48-K9-EU is non-PoE, while SG550X-48P-K9-EU adds PoE+ with a shared 382W budget. Both models are discontinued. The non-PoE model suits separately powered endpoints; the PoE model addresses legacy installations needing power delivered over Ethernet, with endpoint demand sized against the shared power budget before procurement.
SG550X-48-K9-EU provides 48 Gigabit access ports, whereas SG550X-24-K9-EU provides 24. Both retain four 10G uplinks, and both are discontinued. The 48-port version fits denser legacy copper installations; the 24-port version suits smaller existing networks where the additional endpoint connections would not be used in the intended installation.
C1300-48T-4X provides four 10G SFP+ uplinks, whereas SG550X-48-K9-EU combines two dedicated SFP+ uplinks with two copper/SFP+ combo uplinks. C1300-48T-4X is the current replacement-chain endpoint. The older model addresses existing installations needing copper combo connections; the current model suits new purchases standardizing on four SFP+ uplink interfaces.
SG550X-48-K9-EU occupies 1U of rack space with a chassis measuring 440 mm wide, 44 mm high, and 257 mm deep. Unit weight is 3.73 kg, and operating temperature is 0°C to 50°C. Its two-fan arrangement includes one redundant fan, so this is not a fanless desktop switch.
SG550X-48-K9-EU is offered new sealed or certified refurbished, with ORM warranties of up to 3 years extended for new units and up to 1 year refurbished. Returns are 30 days for every condition, terms apply. Cisco's limited lifetime hardware warranty is bounded by its July 31, 2027 support end.
United States
