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SG250-50P-K9-NA
Cisco SG250-50P-K9-NA 250 48-Port Gigabit PoE+ Switch, 2x1G...
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SG250-50P-K9-NA provides 48 Gigabit PoE+ access ports and two fixed Gigabit copper/SFP combo uplinks in a rack-mount 1U chassis. This Layer 2+ smart switch combines Ethernet access and endpoint power for small-business phones, computers, and wireless access points, with configuration controls beyond an unmanaged switch. Each uplink can use copper or fiber, but its paired connectors share a single active interface; there is no 10G uplink capability. Within Cisco 250 Series Smart Switches, the discontinued SG250-50HP-K9-NA offers a lower 192W PoE budget at the same access-port density. The Gigabit PoE smart switch accommodates copper endpoint connections alongside a choice of copper or optical connections to the upstream network.
SG250-50P-K9-NA price for new stock is $470.93. SG250-50P-K9-NA refurb price is $1,332.45. SG250-50P-K9-NA is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for SG250-50P-K9-NA for additional pricing. Browse the full Cisco SG250 Switches series or explore all Cisco products.
100 Gbps switching capacity and 74.41 Mpps forwarding rate define the traffic envelope for simultaneous Gigabit connections. 375W of shared PoE output must cover the combined demand of powered endpoints rather than each port's individual ceiling. 32 static IPv4 routes bound the local routing table. SG250-50P-K9-NA carries 512 MB of memory and 256 MB of flash for its embedded software and configuration. A 24 Mb shared packet buffer serves all ports, while eight hardware queues support traffic scheduling. STP, RSTP, MSTP, and LACP cover loop control and link aggregation; voice VLAN handling separates phone traffic for QoS treatment. Browser administration uses HTTP or HTTPS, and SNMP versions 1, 2c, and 3 support monitoring integration. Maximum input draw reaches 481.9W at 110V with PoE, which belongs in the electrical load plan. The Cisco SG250-50P uses four fans, so installation planning must allow for active cooling.
SG250-50P-K9-NA is available new sealed or certified refurbished. Refurbished units are inspected and bench-tested for power-on and POST, clean boot, every port linking at rated speed, PoE output under load on every powered port, optics bay recognition, and PSU and fan status; firmware is verified and configurations are wiped to factory default. ORM warranties provide up to a 3-year extended term for new units and up to 1 year for refurbished units, with 30-day returns on every condition, terms apply; Cisco's separate limited lifetime hardware warranty includes 1-year fan and power-supply coverage and ends October 31, 2026. Specify condition, quantity, and any required MGBSX1 or MGBLX1 optics on the PO; enterprise and volume terms include Net-30 for government and RMA with advance replacement, with regional stock/RMA in the UK, EU, US, and MEA.
| Key Specs | Key Spec Values |
|---|---|
Port Configuration | 48 x 1G PoE+, 2 x 1G combo uplinks |
PoE Budget | 375W shared across 48 powered ports |
Max Power Draw | 481.9W at 110V with PoE |
Replaces | SG200-50FP-NA; end of sale October 4, 2018 |
Lifecycle Status | End of sale October 30, 2021; support ends October 31, 2026 |
Replacement PID | C1200-48P-4G; discontinued interim CBS250-48P-4G-NA |
When refreshing phones or wireless access points, individual powered connections can receive up to 30W. Aggregate endpoint demand still needs separate sizing, and time-based PoE can switch power on or off by schedule. Specify each endpoint's maximum draw and required operating schedule before the PO.
When an office needs local communication between segmented workgroups, the switch supports 16 IP interfaces for addressing those boundaries. Interface placement can use a physical port, a link aggregation group, a VLAN interface, or a loopback. Check the complete interface plan and required gateway addresses before the PO.
For repeat purchases across several small offices, Textview CLI supports scripted configuration with user privilege levels 1, 7, and 15. A full command interface and a menu-based interface are available. Define the administrator roles and configuration script to accompany each unit before approving the PO.
Four independent fiber uplinks
Two shared copper/SFP Gigabit uplinks cannot provide four simultaneous fiber connections. C1200-48P-4G retains 48 copper access ports and provides four 1G SFP uplinks.
30W on every powered port
The 375W shared PoE budget cannot supply 30W simultaneously to all 48 powered ports. Size endpoint demand against the shared budget rather than the per-port ceiling.
Fanless operation in occupied rooms
Four fans provide active cooling, with acoustic output reaching 50.2 dB at 50°C. The chassis is not fanless, so fanless operation is outside its capabilities.
More than 32 static routes
IPv4 routing is limited to 32 static routes. A design requiring a larger local route table exceeds the switch's routing capacity.
Mon–Fri: [09:00-16:00]
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| SG250-50P-K9-NA |  SG250-10P |  SG250-26HP-K9-NA |  SG250-26P |  SG250-50HP-K9-NA | |
|---|---|---|---|---|---|
| Depth | 350 mm | 170 mm | 257 mm | 257 mm | 350 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 | Desktop | Rack-Mount 1U | Rack-Mount 1U | Rack-Mount 1U |
| Height | 44 mm | 44 mm | 44 mm | 44 mm | 44 mm |
| Manufacturer Part Number | SG250-50P-K9-NA | SG250-10P | SG250-26HP-K9-NA | SG250-26P | SG250-50HP-K9-NA |
| Memory | 512 MB | 512 MB | 512 MB | 512 MB | 512 MB |
| Power Consumption | 481.9W | 85.19W | 135.2W | 262W | 267.2W |
| SFP Ports | 2 x 1GbE (Combo, shared with RJ-45) | 2 x 1GbE (Combo, shared with RJ-45) | 2 x 1GbE (Combo, shared with RJ-45) | 2 x 1GbE (Combo, shared with RJ-45) | 2 x 1GbE (Combo, shared with RJ-45) |
| Switching Capacity | 100 Gbps | 20 Gbps | 52 Gbps | 52 Gbps | 100 Gbps |
| Weight | 4.82 kg | 1.2 kg. | 3.37 kg | 3.81 kg. | 4.8 kg |
| Width | 440 mm | 280 mm | 440 mm | 440 mm | 440 mm |
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SG250-50P-K9-NA identifies the United States regional ordering version of Cisco's 50-port Gigabit PoE smart switch. SG250 is the Gigabit 250 family, 50 denotes total logical ports, P identifies the PoE version, and NA selects the regional suffix. The configuration comprises 48 powered access ports and two combo uplinks.
SG250-50P-K9-NA supports HTTP/HTTPS web management, Textview CLI over SSH or Telnet, SNMP versions 1, 2c, and 3, and Smart Network Application. Cisco FindIT Network Manager, the embedded FindIT Network Probe, FindIT Network Discovery Utility, and Cisco Active Advisor provide additional network discovery, monitoring, or management paths.
375W is the shared PoE budget on SG250-50P-K9-NA, distributed across 48 PoE+ access ports with a 30W per-port maximum. The switch cannot deliver the per-port maximum on every powered port simultaneously. Add the maximum requirements of the planned endpoints before committing the powered-device count.
MGBSX1 and MGBLX1 are supported Gigabit optics for SG250-50P-K9-NA, with multimode and single-mode fiber options respectively. The two SFP connectors are shared with two copper uplink connectors, so each pair carries one active connection. Specify the optical medium and link distance before ordering transceivers.
Yes, SG250-50P-K9-NA provides Layer 2+ switching with IPv4 static routing for 32 routes and 16 IP interfaces. Routing interfaces can use physical ports, link aggregation groups, VLAN interfaces, or loopbacks. Designs with more local routes or gateway interfaces exceed these limits, so verify both counts before assigning gateways.
Cisco SG250-50P uses an internal universal AC power supply accepting 100-240V AC at 50-60 Hz. Maximum consumption reaches 481.9W at 110V when PoE is included. The supply is internal rather than an external adapter, and the switch has no redundant power-supply option.
Yes, the Cisco SG250-50P is a full-width rack-mount 1U switch measuring 440 mm wide, 44 mm high, and 350 mm deep, with a weight of 4.82 kg. A mounting kit is included in the standard package. Check rack depth and equipment loading when allocating the installation position.
Cisco 250 Series Smart Switches support STP, RSTP, MSTP, and LACP for loop control and link aggregation, alongside eight hardware queues for QoS scheduling. Voice VLAN handling assigns phone traffic to a voice-specific VLAN. Apply spanning-tree, aggregation, and voice-traffic settings as separate parts of the configuration.
SG250-50P-K9-NA is discontinued, with end of sale on October 30, 2021, and final Cisco support on October 31, 2026. Software maintenance ended October 30, 2022. The original replacement, CBS250-48P-4G-NA, is also discontinued; the current replacement chain reaches C1200-48P-4G.
SG250-50P-K9-NA replaced SG200-50FP-NA, which reached end of sale on October 4, 2018. The older switch offered a 370W PoE budget, compared with 375W on the replacement. Both belong to the 50-port Gigabit smart-switch category, but SG250-50P-K9-NA has since also been discontinued.
SG250-50P-K9-NA has a 375W PoE budget versus 192W on SG250-50HP-K9-NA, with the same 48 powered access ports. Both are discontinued. The higher budget addresses larger legacy endpoint loads; the lower budget addresses lighter loads at that density. The lower-budget replacement branch has no current migration model.
SG250-50P-K9-NA provides 48 PoE+ access ports, whereas SG250-26P-K9-NA provides 24; both retain two Gigabit copper/SFP combo uplinks. Both models are discontinued. Existing installations needing the larger endpoint count match the 50-port configuration, while maintenance of a smaller 26-port installation follows the lower-density configuration.
C1200-48P-4G provides four 1G SFP uplinks, while SG250-50P-K9-NA provides two Gigabit copper/SFP combo uplinks. Both configurations retain 48 Gigabit powered access ports. SG250-50P-K9-NA is discontinued; C1200-48P-4G is the current end of its replacement chain. The older configuration fits like-for-like maintenance, while the successor fits replacement purchases requiring additional fiber uplinks.
ORM Systems offers SG250-50P-K9-NA new sealed with up to a 3-year extended warranty or certified refurbished with up to 1 year. Returns are 30 days on every condition; terms apply. Cisco's separate limited lifetime hardware warranty includes 1-year fan and power-supply coverage and ends October 31, 2026.
United States
