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SF250-48-K9-NA
Cisco SF250-48-K9-NA 250 Series Smart Switches 48-Port Fast...
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SF250-48-K9-NA combines fanless cooling with 48 Fast Ethernet access ports in a 1U rack-mount smart switch for small-business networks. Part of the Cisco 250 Series Smart Switches family, the Layer 2+ design uses fixed Gigabit uplinks: two dedicated SFP connections and two copper/SFP combo connections, with one active medium per combo port. Non-PoE access connections serve externally powered computers and printers rather than supplying endpoint power. The discontinued SF250-48HP-K9-NA is the nearest powered variant, adding PoE+ with a shared 195W budget. Browser-based configuration and full or menu-based command-line access let administrators configure the network directly instead of relying on unmanaged operation.
SF250-48-K9-NA price for new stock is is available on request. Get immediate quote. SF250-48-K9-NA refurb price is $476.00.
Request bulk order quote for SF250-48-K9-NA for additional pricing. Browse the full Cisco SF250 Switches series or explore all Cisco products.
17.6 Gbps switching capacity supports nonblocking forwarding across the installed interfaces, while 13.1 Mpps packet forwarding is rated with 64-byte packets. Static IPv4 routing supports 32 routes for defined internal paths rather than a dynamic routing control plane. SF250-48-K9-NA carries 512 MB of DRAM and 256 MB of flash for configuration and image handling. An 8000-entry MAC table and 24 Mb shared packet buffer provide address learning and packet storage across the interfaces. The Cisco SF250-48 supports STP/RSTP/MSTP and LACP for loop management and aggregated links. QoS uses eight hardware queues with strict-priority or Weighted Round-Robin scheduling. IGMP snooping restricts multicast delivery to interested receivers, and 512 ACL rules support drop or rate-limit policies. SNMP v1/v2c/v3 integrates monitoring, while an embedded FindIT Network Probe and Smart Network Application provide network-level visibility. 24.2W maximum system consumption provides an electrical planning figure without an additional endpoint power allowance.
Specify SF250-48-K9-NA as new sealed or certified refurbished, and state the required quantity and condition on the purchase order. Certified refurbished units are inspected and bench-tested for power-on and POST, rated-speed links on every port, clean boot, optics bay recognition, and internal PSU status; firmware is verified and the configuration is wiped to factory default. ORM warranties provide up to a 3-year extended term for new units and up to 1 year for certified refurbished units, with 30-day returns on every condition, terms apply; Cisco's separate limited lifetime warranty, where applicable, cannot extend beyond July 31, 2027. Enterprise and volume orders can use PO acceptance, Net-30 for government, regional stock and RMA across UK, EU, US, and MEA, and RMA with advance replacement.
| Key Specs | Key Spec Values |
|---|---|
Port Configuration | 48x10/100, 2x1G Combo, 2x1G SFP |
Max Power Draw | 24.2W |
Cooling | Fanless |
Lifecycle Status | End of sale July 30, 2022 |
Replacement PID | C1200-48T-4G |
When a small-business network needs local communication between workgroups rather than sending every internal flow to an external router, the switch supports 16 IP interfaces across physical ports, VLAN interfaces, LAGs, or loopbacks. Define the interface map and external-router boundary before specifying the configuration on the purchase order.
When several branches need a common baseline, DHCP options 12, 66, 67, 129, and 150 support centralized configuration handling, while SCP autoconfiguration transfers sensitive configuration data securely. Text-editable configuration files can be downloaded to another switch. Specify the staging method and configuration handoff with the hardware order.
When a rollout needs packet-level validation before installation, port mirroring can copy traffic from four source ports to one destination, and VLAN mirroring can copy four source VLANs. Reserve the analyzer connection and identify the capture sources in the staging plan before the purchase order is released.
Gigabit speeds on every access port
The 48 access ports stop at 100 Mbps; only the uplinks are Gigabit. C1200-48T-4G provides 48 Gigabit access ports plus four 1G SFP uplinks as a current replacement.
PoE-powered phones or access points
The access ports supply no PoE, so phones or access points that depend on Ethernet-delivered power cannot receive their operating power from this model.
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| SF250-48-K9-NA |  SF250-48HP |  SF250-48HP-K9-UK |  SF250-24-K9-EU |  SF250-24P | |
|---|---|---|---|---|---|
| Depth | 257 mm | 350 mm | 350 mm | 202 mm | 257 mm |
| Ethernet Technology | Fast Ethernet | Fast Ethernet | Fast Ethernet | Fast Ethernet | Fast 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 | SF250-48-K9-NA | SF250-48HP | SF250-48HP-K9-UK | SF250-24-K9-EU | SF250-24P |
| Memory | 512 MB | 512 MB | 512 MB | 512 MB | 512 MB |
| Power Consumption | 24.2W | 265.2W | 265.2W | 10.9W | 238W |
| SFP Ports | 2 x 1GbE / 2 x 1GbE (Combo, shared with RJ-45) | 2 x 1GbE / 2 x 1GbE (Combo, shared with RJ-45) | 2 x 1GbE / 2 x 1GbE (Combo, shared with RJ-45) | 2 x 1GbE / 2 x 1GbE (Combo, shared with RJ-45) | 2 x 1GbE / 2 x 1GbE (Combo, shared with RJ-45) |
| Switching Capacity | 17.6 Gbps | 17.6 Gbps | 17.6 Gbps | 12.8 Gbps | 12.8 Gbps |
| Weight | 3.57 kg | 4.93 kg | 4.93 kg | 2.72 kg | 4.1 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.
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SF250-48-K9-NA identifies a 250 Series Fast Ethernet smart switch with 48 access ports. SF250 identifies the Fast Ethernet model group, 48 denotes access-port count, and NA selects the region covering the United States, Canada, Mexico, Colombia, Chile, and other Latin American markets. Retain the complete K9-bearing identifier when ordering.
SF250-48-K9-NA supports an HTTP/HTTPS web interface, full or menu-based CLI over SSH/Telnet, and SNMP v1/v2c/v3. Network-level options include Smart Network Application, FindIT Network Manager with an embedded FindIT Network Probe, FindIT Network Discovery Utility, and Cisco Active Advisor. Cisco Network Plug and Play supports provisioning through PnP Connect.
SF250-48-K9-NA is discontinued: Cisco sales ended July 30, 2022, and the last date of support is July 31, 2027. Software maintenance ended July 30, 2023. The migration chain reaches C1200-48T-4G through the discontinued CBS250-48T-4G-NA, rather than stopping at that older replacement.
ORM Systems offers SF250-48-K9-NA new sealed or certified refurbished, with up to a 3-year extended warranty on new units and up to 1 year on refurbished units. Returns cover 30 days in every condition; terms apply. Cisco's separate limited lifetime warranty, where applicable, cannot extend beyond support ending July 31, 2027.
SF250-48-K9-NA has four 1G uplink connections: two dedicated SFP ports and two Gigabit copper/SFP combo ports. Each combo connection offers RJ-45 or shared SFP operation, with only one medium active at a time. These are fixed 1G uplinks, not 10G SFP+ interfaces or a removable uplink card bay.
SF250-48-K9-NA supports static IPv4 routing with 32 routes and 16 IP interfaces, making the switch Layer 2+ rather than a dynamic-routing access switch. Routed interfaces can be physical ports, LAGs, VLAN interfaces, or loopbacks. Place external traffic and security functions on a separate router when specifying the routing boundary.
SF250-48-K9-NA uses a fixed internal AC power supply accepting 100-240V AC at 50-60 Hz, without an internal redundant supply option. Maximum system consumption is 24.2W at 220V, compared with 23.4W at 110V. A second plug-in supply cannot be specified for this chassis.
Cisco SF250-48 occupies one rack unit in a 440 mm-wide chassis, with a height of 44 mm and depth of 257 mm. The switch weighs 3.57 kg and includes a mounting kit in its standard package. Confirm rack clearance and the mounting hardware supplied with the chosen condition.
SF250-48HP-K9-NA provides 48 PoE+ ports with a shared 195W budget, whereas SF250-48-K9-NA provides non-PoE access ports. Both models are discontinued. The non-PoE model suits retaining externally powered endpoints; the PoE version suits existing installations that need switch-delivered endpoint power within that shared budget.
SF250-48-K9-NA has 48 Fast Ethernet access ports; SF250-24-K9-NA has 24. Both models are discontinued and retain two Gigabit copper/SFP combo uplinks plus two dedicated SFP uplinks. The 48-port model fits denser existing wiring; the 24-port model fits existing installations with fewer access connections.
C1200-48T-4G provides 48 Gigabit access ports, while SF250-48-K9-NA provides 48 Fast Ethernet access ports. The current Catalyst 1200 model continues the migration chain; the SF250 model is discontinued. Retaining 100 Mbps endpoint connections favors an existing-fleet spare, while moving those connections to 1 Gbps favors C1200-48T-4G.
Cisco SF250-48 supports MGBSX1 for 1 Gbps multimode fiber links to 500 m and MGBLX1 for 1 Gbps single-mode fiber links to 10 km. Match the installed fiber, the optic at the far end, and link length when selecting transceivers. Account for these optics separately from the switch hardware order.
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