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SF550X-24P-K9
Cisco SF550X-24P-K9 550X 24-Port Fast Ethernet PoE+ Switch,...
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SF550X-24P-K9 combines 24 Fast Ethernet PoE+ access ports with four fixed 10 Gigabit Ethernet uplinks in a managed, 1U rack-mount switch. Two uplinks offer shared copper/SFP+ connections, while two use dedicated SFP+ cages, allowing copper or fiber upstream connections without an expansion card. The Cisco 550X Series Stackable Managed Switches serves small and medium businesses retaining 10/100 endpoints rather than requiring Gigabit access at every outlet. Its Layer 2+ feature set includes inter-VLAN forwarding and dynamic routing through RIP v2. The discontinued SF550X-24MP-K9-NA increases the PoE budget to 382W at the same access-port density. This 24-port Fast Ethernet PoE+ stackable switch requires separate checks for endpoint link speed, upstream media, and aggregate endpoint power.
SF550X-24P-K9 price for new stock is is available on request. Get immediate quote. SF550X-24P-K9 refurb price is $3,940.37.
Request bulk order quote for SF550X-24P-K9 for additional pricing. Browse the full Cisco SF550X Switches series or explore all Cisco products.
84.8 Gbps switching capacity accommodates the fixed access and uplink interfaces, while 63.09 Mpps forwarding is rated for 64-byte packets. 195W of shared PoE power requires endpoint allocations to remain within the chassis-wide ceiling. Static IPv4/IPv6 routing, VRRP v2/v3, and PBR complement the access switching functions. SF550X-24P-K9 carries 512 MB of DRAM and 256 MB of flash for its embedded software and configurations, with a shared 1.5 MB packet buffer serving all ports. The forwarding database holds 16000 MAC addresses, and IPv4 routing supports 7168 routes with 256 IP interfaces. STP/RSTP/MSTP and LACP support loop control and aggregated links; access controls include DHCP snooping, dynamic ARP inspection, and IP Source Guard. Browser-based HTTP/HTTPS administration and a scriptable CLI provide configuration paths, while SNMP supports external monitoring. Two operating fans and one redundant fan provide active cooling; power redundancy requires an external system rather than a second internal supply.
Order SF550X-24P-K9 new sealed or certified refurbished, specifying quantity, regional power requirements, and required accessories 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, PoE output under load on every powered port, and optics bay recognition; firmware is verified and configurations wiped to factory default. ORM provides up to a 3-year extended warranty for new units, up to 1 year for certified refurbished units, and 30-day returns on every condition, terms apply; Cisco's limited lifetime hardware warranty ended June 30, 2025. Enterprise and volume orders support PO acceptance, Net-30 for government, RMA with advance replacement, and UK, EU, US, and MEA regional stock/RMA.
| Key Specs | Key Spec Values |
|---|---|
Port Configuration | 24 x 10/100 PoE+ / 4 x 10G uplinks |
PoE Budget | 195W |
Stacking | Hardware stacking / 8 members |
Max Power Draw | 242.1W |
Lifecycle Status | Support ended June 30, 2025 |
Replacement PID | C1300-24P-4X |
When a retained Fast Ethernet installation adds higher-draw devices, eight access ports can deliver 60W each within the shared chassis power limit. This capability concerns selected ports, not every outlet, and does not increase total available PoE power. Identify compatible endpoint requirements and the intended powered outlets before finalizing the load allocation.
When extending an existing hardware stack, ring and chain topologies use standard 10G copper or fiber links rather than a dedicated stacking module. Link aggregation can also form stacking interconnects. Count the ports committed to member connections separately from upstream connections, then specify the media and topology before the purchase order.
When preparing multiple branches from a common configuration, Cisco Network Plug and Play and PnP Connect support provisioning, while SCP configuration download protects transferred settings. Editable configuration files can be reused across switches. Confirm the provisioning workflow, address assignment, and site-specific configuration values before specifying staging requirements and switch quantities on the purchase order.
Gigabit links to every endpoint
The powered access ports stop at 100 Mbps; 10G uplinks do not change endpoint speeds. The current successor, C1300-24P-4X, provides 24 Gigabit Ethernet access ports.
Dual internal redundant power supplies
The internal supply is not a dual-module redundant arrangement. Power redundancy requires an external redundant power system rather than a second internal power supply.
Silent fanless operation
Two operating fans and one redundant fan provide active cooling. SF550X-24P-K9 is not fanless, so exclude this model when the installation requires a fan-free chassis.
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| SF550X-24P-K9 |  SF550X-24P |  SF550X-48MP |  SF550X-24MP |  SF550X-48P-K9 | |
|---|---|---|---|---|---|
| Ethernet Technology | Fast Ethernet | Fast Ethernet | Fast Ethernet | Fast Ethernet | Fast Ethernet |
| Form Factor | Rack-Mount 1U | Rack-Mount 1U | Rack-Mount 1U | Rack-Mount 1U | Rack-Mount 1U |
| Manufacturer Part Number | SF550X-24P-K9 | SF550X-24P | SF550X-48MP | SF550X-24MP | SF550X-48P-K9 |
| Power Consumption | 242.1W | 242.1W | 842.1W | 452W | 461.8W |
| Switching Capacity | 84.8 Gbps | 84.8 Gbps | 89.6 Gbps | 84.8 Gbps | 89.6 Gbps |
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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.
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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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SF550X-24P-K9 identifies a 550X Fast Ethernet stackable managed switch: 24 indicates 24 access ports, and P identifies the PoE+ configuration. Four 10G uplinks include two copper/SFP+ combo connections and two dedicated SFP+ cages. The North American ordering form is SF550X-24P-K9-NA; NA selects the region rather than a separate software tier.
The Cisco 550X Series supports browser management through HTTP/HTTPS, full or menu CLI through console/SSH/Telnet, and SNMP v1/v2c/v3. Network-level options include Smart Network Application, FindIT Network Manager with an embedded FindIT Network Probe, and Active Advisor. The web interface includes simple and advanced modes, a customizable dashboard, configuration wizards, monitoring, and maintenance functions.
Yes, SF550X-24P-K9 reached end of sale on June 18, 2020, and its last date of support was June 30, 2025. Cisco service has ended. Continued use therefore requires an independent maintenance and replacement plan; new sealed inventory does not restart the Cisco lifecycle or restore ended service entitlements.
ORM offers SF550X-24P-K9 new sealed with up to a 3-year extended warranty or certified refurbished with up to a 1-year warranty; both conditions have 30-day returns, terms apply. Refurbished units are inspected and bench-tested, firmware verified, and wiped to factory default. Cisco's original limited lifetime hardware warranty ended with support on June 30, 2025.
SF550X-24P-K9 shares 195W across 24 PoE-capable ports, with eight ports supporting 60W each and the remaining ports rated for 30W. These per-port ratings do not mean every port can operate at maximum simultaneously. Allocate power against actual endpoint requirements and confirm compatibility before assigning the highest-draw devices to the selected 60W ports.
SF550X-24P-K9 has four fixed 10G uplinks: two dedicated SFP+ ports and two copper/SFP+ combo ports. Each combo connection activates either copper or fiber, not both simultaneously. SFP-10G-SR supports multimode fiber, and SFP-10G-LR supports single-mode fiber; select transceivers separately to match the installed fiber and link distance.
A Cisco 550X Series hardware stack contains eight members maximum and operates as one managed system. Ring and chain connections use standard 10G copper or fiber interfaces, with link aggregation available for stacking interconnects. SFP-H10GB-CU1M, SFP-H10GB-CU3M, and SFP-H10GB-CU5M provide supported direct-attach cable options at their respective lengths.
Yes, SF550X-24P-K9 supports inter-VLAN routing through static IPv4/IPv6 routes and RIP v2, placing its routing feature set in Layer 2+. IPv4 capacity reaches 7168 routes with 256 IP interfaces. VRRP v2/v3 provides gateway redundancy, while PBR directs selected traffic according to configured policies rather than destination routing alone.
SF550X-24P-K9 uses an internal universal AC supply accepting 100-240V AC at 47-63 Hz; maximum PoE-loaded consumption is 242.1W at 110V. Power redundancy uses an external redundant power system rather than a second internal supply. Specify the backup architecture and regional power-cord requirements before ordering a replacement unit.
The SF550X-24P occupies 1U of rack space, measuring 440 mm wide, 44 mm high, and 257 mm deep, with a weight of 4.14 kg. Its operating temperature range is 0°C to 50°C. Confirm rack clearance, mounting hardware, and package contents for the selected condition before finalizing the order.
SF550X-24MP-K9-NA provides a 382W PoE budget, compared with 195W for SF550X-24P-K9. Both models are discontinued and serve retained Fast Ethernet installations. The higher-budget version suits an existing fleet with larger aggregate endpoint loads; the 195W version suits a load schedule that stays within its lower budget without changing access-port density.
SF550X-48P-K9-NA supplies 48 Fast Ethernet access ports, whereas SF550X-24P-K9 supplies 24. Both are discontinued models, so this is a retained-fleet density comparison rather than a current-product recommendation. Existing 48-outlet installations retaining their hardware layout use the larger model; replacement requirements for 24 access connections point to the smaller model.
C1300-24P-4X provides 24 Gigabit Ethernet access ports, whereas SF550X-24P-K9 provides 24 Fast Ethernet access ports. C1300-24P-4X is the current model at the end of the replacement chain; SF550X-24P-K9 is discontinued. Retained 100 Mbps endpoint fleets may require the older hardware, while purchases requiring Gigabit endpoint links point to C1300-24P-4X.
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