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SX550X-24F-K9-NA
Cisco SX550X-24F-K9-NA 550X 24-Port 10 Gigabit Ethernet Swit...
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SX550X-24F-K9-NA is a managed Layer 2+ 10 Gigabit Ethernet SFP+ switch for small-business aggregation, with 20 dedicated fiber ports and four fixed combo uplinks in a 1U rack-mount chassis. Each combo uplink selects either its SFP+ connection or its RJ-45 connection, bringing fiber and copper links onto the same chassis without adding an uplink card. The non-PoE configuration connects separately powered servers, network storage and downstream switches rather than supplying endpoint power. Within the 550X Series, the discontinued SX550X-12F-K9-NA is the lower-density sibling with 12 logical network ports. The fiber-first layout makes media selection a purchase decision: identify which shared uplinks require copper connections and which require optics before assembling the equipment order.
SX550X-24F-K9-NA price for new stock is is available on request. Get immediate quote. SX550X-24F-K9-NA refurb price is $3,678.55.
Request bulk order quote for SX550X-24F-K9-NA for additional pricing. Browse the full Cisco SX550X Switches series or explore all Cisco products.
480 Gbps switching capacity provides the switching fabric for traffic across the fixed network connections. 240 Mpps forwarding at 64-byte packet size defines the small-packet processing ceiling for traffic sizing. Static IPv4/IPv6 routing and RIP v2 handle local route selection, while PBR steers selected flows and VRRP v2/v3 provides default-gateway redundancy. SX550X-24F-K9-NA combines 512 MB of memory with 256 MB of flash for control-plane operation and image storage. A dynamically shared 3 MB packet buffer holds queued traffic across the ports, and a 32000-entry MAC table supports address learning across connected segments. STP/RSTP/MSTP controls forwarding loops, while LACP groups links where aggregated connections are required. External RPS input supplies the power-redundancy path; redundant internal PSU modules are not included. 55.5W maximum consumption sets the electrical allowance for chassis power, separate from the power requirements of attached equipment.
ORM Systems supplies SX550X-24F-K9-NA new sealed or certified refurbished; refurbished units are inspected and bench-tested for rated-speed port links and optics bay recognition, with firmware verified and configuration wiped to factory default. Specify condition, quantity and required accessories on the purchase order for this switch. New units include up to a 3-year extended warranty, certified refurbished units up to 1 year, and every condition has 30-day returns, terms apply; Cisco's separate limited lifetime warranty and service end 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 UK, EU, US and MEA.
| Key Specs | Key Spec Values |
|---|---|
Port Configuration | 20 x 10G SFP+ / 4 x 10G combo |
Stacking | Hardware stacking / 8 members |
Max Power Draw | 55.5W |
Replaces | SG550XG-24F-K9-NA / end-of-sale June 18, 2020 |
Lifecycle Status | End-of-sale July 30, 2022 / support ends July 31, 2027 |
Replacement PID | C1300-24XS / via discontinued CBS350-24XS-NA |
An installed fleet using SG550XG-24F-K9-NA can trigger a replacement purchase for its named successor, SX550X-24F-K9-NA. The older model reached its last support date on June 30, 2025. For an exact-generation maintenance purchase rather than a new design, confirm the required regional identifier, existing link media and spare quantities before the PO.
Repeated staging of switches for multiple locations calls for a controlled configuration and image workflow. The 550X Series maintains dual firmware images and accepts text-editable configuration files, allowing a prepared configuration to be loaded during staging. Specify the target firmware, configuration file and staging quantity before placing the order.
When several small routing domains are consolidated onto one chassis, interface count can matter before route-table size. The 550X Series supports 4094 active VLANs and 256 IPv4 interfaces. Define which VLANs require routed interfaces and count the associated interface assignments before specifying the consolidation purchase.
Switch-powered phones and access points
SX550X-24F-K9-NA supplies no PoE output through its copper connections. An installation requiring the aggregation switch itself to power phones or access points cannot use this non-PoE configuration.
Redundant internal power supply modules
SX550X-24F-K9-NA uses an internal universal supply with external RPS support, rather than redundant internal PSU modules. A requirement for internal dual-supply redundancy excludes this chassis.
Cisco support beyond July 2027
SX550X-24F-K9-NA reaches its last support date on July 31, 2027. C1300-24XS is the current successor for purchases that cannot accept that fixed service endpoint.
Fanless operation in occupied rooms
SX550X-24F-K9-NA runs four fans, including one redundant fan. A purchasing specification requiring passive cooling excludes this model, regardless of whether fiber or copper connections are used.
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| SX550X-24F-K9-NA |  SX550X-52-K9-UK |  SX550X-16FT-K9-EU |  SX550X-52-K9-NA |  SX550X-24-K9-NA | |
|---|---|---|---|---|---|
| Depth | 350 mm | 450 mm | 257 mm | 450 mm | 350 mm |
| Ethernet Technology | 10 Gigabit Ethernet | 10 Gigabit Ethernet | 10 Gigabit Ethernet | 10 Gigabit Ethernet | 10 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 | SX550X-24F-K9-NA | SX550X-52-K9-UK | SX550X-16FT-K9-EU | SX550X-52-K9-NA | SX550X-24-K9-NA |
| Memory | 512 MB | 512 MB | 512 MB | 512 MB | 512 MB |
| Power Consumption | 55.5W | 234.5W | 57.7W | 234.5W | 124.6W |
| Switching Capacity | 480 Gbps | 1040 Gbps | 320 Gbps | 1040 Gbps | 480 Gbps |
| Weight | 4.7 kg | 7.36 kg | 3.79 kg | 7.36 kg. | 5.16 kg |
| Width | 440 mm | 440 mm | 440 mm | 440 mm | 440 mm |
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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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SX550X-24F-K9-NA identifies the regional 550X 24-port 10 Gigabit Ethernet fiber switch. SX550X identifies the 10 Gigabit family, 24F denotes the 24-port fiber configuration, and K9 remains part of the complete ordering identifier. NA selects the United States, Canada, Mexico and designated Latin American markets.
SX550X-24F-K9-NA is managed through its HTTP/HTTPS web interface, Textview CLI over console, SSH or Telnet, SNMP, and network-management tools. Those tools include Smart Network Application, FindIT Network Manager with the embedded FindIT Network Probe, FindIT Network Discovery Utility, and Active Advisor. The web interface offers simple and advanced modes.
SX550X-24F-K9-NA is discontinued, with an end-of-sale date of July 30, 2022, and a last support date of July 31, 2027. Software maintenance releases ended July 30, 2023. Its original replacement, CBS350-24XS-NA, is also discontinued; the current migration chain ends at C1300-24XS.
SX550X-24F-K9-NA replaces SG550XG-24F-K9-NA, the discontinued 24-port 10 Gigabit Ethernet SFP+ model. SG550XG-24F-K9-NA reached end-of-sale on June 18, 2020, and its last support date was June 30, 2025. For a maintenance purchase, retain the complete regional identifier and verify the existing link configuration before substituting hardware.
ORM Systems offers SX550X-24F-K9-NA 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. Returns are available for 30 days in every condition; terms apply. Cisco's separate limited lifetime hardware warranty is bounded by July 31, 2027, its last support date.
No, SX550X-24F-K9-NA supplies no PoE on its four copper connections. Those RJ-45 interfaces are shared with four SFP+ interfaces and provide data connectivity, not endpoint power. This is a non-PoE aggregation configuration; endpoint power must be addressed separately when assembling the complete network purchase.
The 550X SFP+ ports accept SFP-10G-SR for multimode fiber or SFP-10G-LR for single-mode fiber. Direct-attach options are SFP-H10GB-CU1M at 1 m, SFP-H10GB-CU3M at 3 m and SFP-H10GB-CU5M at 5 m. Match the selected accessory to the link media and physical reach before adding it to the purchase order.
The 550X Series hardware stack supports eight members under one management address. Fast Ethernet, Gigabit Ethernet and 10 Gigabit Ethernet models can share a stack, using standard network interfaces for interconnects. Ring and chain topologies are supported, and aggregated stacking links can provide additional interconnect bandwidth.
Yes, SX550X-24F-K9-NA routes between VLANs using static IPv4/IPv6 routing or RIP v2, with PBR and VRRP v2/v3 available. IPv4 capacity is 7168 routes, while IPv6 static routing supports 1792 routes. Size route counts separately for IPv4 and IPv6, and establish the required default-gateway redundancy during configuration planning.
No, SX550X-24F-K9-NA does not ship with redundant internal power supplies; the chassis uses an internal universal AC supply. Power input is 100-240V AC, and an external RPS connection provides the separate redundancy path. Treat external power redundancy as additional equipment, not a second internal PSU included with the switch.
Yes, SX550X-24F-K9-NA is a 1U rack-mount switch, and the mounting kit is included. The chassis measures 440 mm wide, 44 mm high and 350 mm deep, with a weight of 4.7 kg. Check rack depth and cable clearance before finalizing the equipment order.
SX550X-24F-K9-NA operates from 0°C to 50°C and has a 433149-hour MTBF at 50°C. Regulatory ratings include UL 60950, CSA 22.2, the CE mark and FCC Part 15 (CFR 47) Class A. Match the installation's ambient temperature and compliance requirements before ordering the chassis.
SG550X-24P-K9-NA supplies a 195W PoE+ budget, while SX550X-24F-K9-NA does not supply endpoint power. Both models are discontinued. Their power roles separate legacy inventories: SG550X-24P-K9-NA corresponds to powered-access installations, whereas SX550X-24F-K9-NA corresponds to aggregation links whose connected equipment receives power separately.
SX550X-24F-K9-NA offers 24 logical network ports, while SX550X-12F-K9-NA offers 12. Both are discontinued 10 Gigabit Ethernet fiber models from the 550X Series. The larger unit matches maintenance purchases for an existing 24-port footprint; the smaller unit matches existing installations whose port allocation was built around the 12-port model.
SX550X-24F-K9-NA is discontinued, while C1300-24XS is the current successor reached through the also-discontinued CBS350-24XS-NA. Both carry a 24-port SFP+ configuration with four shared 10G connections. SX550X-24F-K9-NA serves exact-generation maintenance purchases; C1300-24XS is the migration endpoint for establishing a new equipment standard.
United States
