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SG250X-48P-K9
Cisco SG250X-48P-K9 250 48-Port Gigabit PoE+ Switch, 2x10GBA...
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SG250X-48P-K9 is a Layer 2+ smart-managed access switch with 48 Gigabit Ethernet PoE+ ports and four fixed 10G uplinks: two 10GBASE-T connections and two SFP+ slots. The rack-mount 1U chassis belongs to the Cisco 250 Series, connecting computers alongside powered phones, wireless access points, and cameras in small-business networks. Copper and fiber uplink interfaces are built in rather than added through a removable network module. The discontinued SG250X-48-K9-NA carries the same access-port count without endpoint power, distinguishing the powered configuration from its nearest sibling. Automatic voice VLAN handling assigns telephony traffic to a separate VLAN, while traffic prioritization distinguishes delay-sensitive communications from ordinary data transfers.
SG250X-48P-K9 price for new stock is is available on request. Get immediate quote. SG250X-48P-K9 refurb price is $1,060.36.
Request bulk order quote for SG250X-48P-K9 for additional pricing. Browse the full Cisco SG250X Switches series or explore all Cisco products.
176 Gbps switching capacity provides wire-speed, nonblocking switching across the built-in interfaces. 130.94 Mpps forwarding at a 64-byte packet size defines the small-packet throughput ceiling. Static IPv4 routing supports 32 routes, keeping routing within an explicitly configured topology rather than a dynamic routing domain. SG250X-48P-K9 carries 512 MB of DRAM and 256 MB of flash for software and configuration storage. A 24 Mb shared packet buffer serves the ports collectively; eight hardware queues support strict-priority or Weighted Round-Robin scheduling. STP/RSTP/MSTP and LACP provide loop control and link aggregation, while RADIUS and ingress or egress ACLs control access. Management includes a browser interface, Textview CLI over SSH or Telnet, SNMP, Smart Network Application, and FindIT integration. The SG250X-48P also supports scheduled port operation and scheduled PoE, allowing administrators to control when connections and endpoint power are active.
ORM Systems offers SG250X-48P-K9 new sealed or certified refurbished, with up to a 3-year extended warranty for new units and up to 1 year for certified refurbished units; Cisco's separate limited lifetime hardware coverage ends October 31, 2026. Refurbished units are inspected and bench-tested for power-on and POST, rated-speed port links, clean boot, PoE output under load on every powered port, and optics bay recognition; firmware is verified and configurations are wiped to factory default. Specify condition and regional power requirements on the PO; returns are 30 days on every condition, terms apply. Enterprise and volume orders have PO acceptance, Net-30 for government, UK, EU, US, and MEA regional stock and RMA, plus RMA with advance replacement.
| Key Specs | Key Spec Values |
|---|---|
Port Configuration | 48x1G PoE+ / 2x10GBASE-T / 2x10G SFP+ |
PoE Budget | 382W shared |
Max Power Draw | 502.3W |
Cooling | 4 fans |
Lifecycle Status | End-of-sale October 30, 2021 / support ends October 31, 2026. |
Replacement PID | C1200-48P-4X. |
When several small-business sites need the same configuration, the front-panel USB Type-A connection supports image and configuration transfer. Editable configuration files can also be downloaded to another switch. Establish the required regional ordering form and decide how configuration files will be staged before adding rollout quantities to the PO.
When a small site adds separate local workgroups, the ceiling of 16 IP interfaces becomes an interface-planning constraint. Interfaces can attach to physical ports, link aggregation groups, VLANs, or loopbacks. Count the interfaces required by the complete topology, including management addressing, before specifying the switch on the PO.
When a staging lab needs packet visibility before equipment enters service, port mirroring can send traffic from four source ports to one destination port. VLAN mirroring provides a separate capture option for VLAN-based investigation. Identify the analyzer connection and required capture sources before ordering the lab switch and associated cabling.
Maximum PoE draw across every port
The shared 382W PoE budget cannot deliver 30W simultaneously across all 48 powered ports; full-port maximum demand would require 1440W of endpoint power.
Four fiber uplinks at 10G
Only two uplinks use SFP+ cages; the remaining two are copper 10GBASE-T. C1200-48P-4X provides four 10G SFP+ uplinks while retaining 48 Gigabit access ports.
Dynamic routing protocol adjacency
IPv4 routing is limited to 32 static routes and 16 IP interfaces; this model cannot serve a design that requires dynamic route exchange.
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| SG250X-48P-K9 |  SG250X-24P-K9 |  SG250X-24P-K9-NA |  SG250X-48-K9-EU |  SG250X-24-K9-EU | |
|---|---|---|---|---|---|
| Depth | 350 mm | 257 mm | 257 mm | 257 mm | 257 mm |
| Ethernet Technology | Gigabit Ethernet | Gigabit Ethernet | 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 | SG250X-48P-K9 | SG250X-24P-K9 | SG250X-24P-K9-NA | SG250X-48-K9-EU | SG250X-24-K9-EU |
| Memory | 512 MB | 512 MB | 512 MB | 512 MB | 512 MB |
| Power Consumption | 502.3W | 260.1W | 260.1W | 46W | 29.1W |
| Switching Capacity | 176 Gbps | 128 Gbps | 128 Gbps | 176 Gbps | 128 Gbps |
| Weight | 4.84 kg. | 3.86 kg | 3.86 kg | 3 kg | 2.66 kg |
| Width | 440 mm | 440 mm | 440 mm | 440 mm | 440 mm |
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SG250X-48P-K9 identifies a 48-port Gigabit PoE+ smart switch with 10G uplinks. SG250X identifies the model family, 48 identifies the access-port count, and P distinguishes the powered configuration. K9 remains part of the base ordering identifier. SG250X-48P-K9-NA is the complete United States regional ordering form.
SG250X-48P-K9 supports HTTP/HTTPS web management, Textview CLI over SSH or Telnet, SNMP versions 1, 2c, and 3, Smart Network Application, FindIT Network Manager with an embedded FindIT Network Probe, and Cisco Active Advisor. FindIT Network Discovery also provides browser-based discovery, while the CLI supports scripted configuration.
SG250X-48P-K9 provides a shared 382W PoE budget across 48 PoE+ access ports, with a maximum of 30W on an individual port. The aggregate budget prevents every port from drawing its individual maximum simultaneously. Size the connected phones, cameras, and access points against their combined power requirements.
Cisco 250 Series 10G SFP+ uplinks support SFP-10G-SR for multimode fiber and SFP-10G-LR for single-mode fiber. Supported direct-attach choices include SFP-H10GB-CU1M, SFP-H10GB-CU3M, and SFP-H10GB-CU5M. Select the connection by fiber type or cable length, and match the interface at the other end before specifying the accessory.
Yes, SG250X-48P-K9 supports static IPv4 routing between networks, with 32 static routes and 16 IP interfaces. Interfaces can be assigned to VLANs, physical ports, link aggregation groups, or loopbacks. The routing capability is static rather than dynamic, so route changes require configuration rather than routing-protocol adjacency.
Yes, the SG250X-48P model in the Cisco 250 Series includes a mounting kit and power cord. Its chassis measures 440 mm wide, 44 mm high, and 350 mm deep, placing this configuration in a full-width 1U rack position. Allow additional cabinet space for the installed cable connections.
SG250X-48P-K9 is discontinued: end-of-sale was October 30, 2021, and Cisco support ends October 31, 2026. Software maintenance ended October 30, 2022. The original replacement, CBS250-48P-4X-NA, is also discontinued; following the migration chain leads to C1200-48P-4X as the current replacement for a new equipment refresh.
ORM offers SG250X-48P-K9 new sealed or certified refurbished, with up to 3-year extended coverage for new units and up to 1 year for refurbished units. Returns are 30 days on every condition; terms apply. Cisco's limited lifetime hardware warranty ends October 31, 2026; fans and power supplies originally carry 1-year coverage.
SG250X-48P-K9 supplies PoE+ endpoint power, while SG250X-48-K9-NA has non-PoE access ports. Both configurations are discontinued. The powered model serves buyers maintaining installations that power endpoints through Ethernet; the non-PoE configuration serves existing installations whose attached equipment uses separate power supplies rather than switch-delivered power.
SG250X-48P-K9 provides 48 powered Gigabit access ports, while SG250X-24P-K9-NA provides 24. Both configurations are discontinued, so the comparison concerns existing equipment maintenance rather than a current-model recommendation. The larger configuration serves higher connection counts; the smaller configuration matches installations retaining a 24-port access footprint.
SG250X-48P-K9 combines two copper 10GBASE-T uplinks with two 10G SFP+ uplinks, while C1200-48P-4X provides four 10G SFP+ uplinks. The discontinued model suits maintenance of an existing mixed-media installation. The current successor suits buyers migrating to four SFP+ uplink connections while retaining 48 Gigabit access ports.
502.3W is the worst-case consumption for SG250X-48P-K9 at 110V with PoE loaded. At 220V, the corresponding figure is 487.1W. Switch-only consumption is 68.4W at 110V or 70.3W at 220V. Size AC circuits and UPS allocations for loaded consumption rather than treating the 382W endpoint allocation as input consumption.
United States
