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SX350X-24-K9
Cisco SX350X-24-K9 350X 20-Port 10 Gigabit Switch, 4x10G Com...
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SX350X-24-K9 provides 10GBASE-T connectivity for servers and network storage in small-business networks, combining managed Layer 2+ switching with fixed shared-media uplinks. The 24-port 10GBASE-T stackable managed switch combines 20 dedicated copper ports with four copper/SFP+ combo connections. Activating a fiber interface disables its paired copper connection. The 1U chassis belongs to the Cisco 350X series and supplies no PoE, so attached equipment needs its own power. Copper and fiber interfaces support Gigabit operation alongside their native higher speed, allowing link speeds to follow the connected equipment. Compared with the discontinued SX350X-12-K9-NA and its 12 network-port positions, this model provides 24 positions. A dedicated Gigabit management interface separates out-of-band administration from network connections, while the RJ-45 console provides a local access path.
SX350X-24-K9 price for new stock is $1,648.50, a 74.3% saving from the Cisco list price of $6,422.08. SX350X-24-K9 refurb price is $5,482.26. SX350X-24-K9 is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for SX350X-24-K9 for additional pricing. Browse the full Cisco SX350X Switches series or explore all Cisco products.
480 Gbps switching capacity accommodates traffic across the network interfaces. 240 Mpps forwarding applies to 64-byte packets, providing the packet-rate figure for small-frame traffic. Static IPv4 and IPv6 routing enables communication between configured subnets. SX350X-24-K9 holds 32000 MAC addresses for connected devices and uses 512 MB of DRAM plus 256 MB of flash for its embedded software and configuration. A shared 3 MB packet buffer handles traffic across all ports rather than assigning a fixed buffer to each connection. VLAN support extends to 4094 active VLANs, with STP, RSTP, and MSTP controlling redundant Layer 2 paths. LACP supports eight link aggregation groups, allowing parallel connections to operate as logical links. Security functions include DHCP snooping, Dynamic ARP Inspection, and IP Source Guard for checking access traffic against bindings. Eight hardware queues provide traffic scheduling, and iSCSI traffic optimization can prioritize storage traffic. 124.5W maximum power consumption provides a reference for power-circuit sizing.
Select new sealed or certified refurbished SX350X-24-K9, specifying the regional version, connection accessories, and quantities on the purchase order. Certified refurbished units are inspected and bench-tested for rated-speed links on every port and optics bay recognition, with firmware verified and configuration wiped to factory default. ORM warranties are up to 3-year extended for new and up to 1 year for certified refurbished, with 30-day returns on either condition, terms apply; Cisco's separate limited lifetime warranty is subject to eligibility and ends with North American service July 31, 2027. Enterprise and volume purchasing includes PO acceptance, government Net-30, and RMA with advance replacement.
| Key Specs | Key Spec Values |
|---|---|
Port Configuration | 20 x 10G copper / 4 x 10G combo |
Stacking | Hardware stacking / 4 members |
Max Power Draw | 124.5W |
Cooling | 4 fans |
Lifecycle Status | End of sale July 30, 2022 |
Replacement PID | C1300-24XT |
When a server refresh retains copper structured cabling, Category 6a supports the required high-speed connections at distances through 100 m. The cabling requirement includes the installed channel, not simply the endpoint patch cords. Specify cable category, link lengths, patching, and endpoint interfaces before the purchase order.
When an existing hardware stack needs another chassis, ring and chain arrangements use network interfaces for interconnects. SFP-H10GB-CU1M= provides a 1 m copper connection between adjacent equipment. Reserve interconnect ports, confirm cable reach, and specify the intended topology and cable quantities before ordering.
When spare hardware must be staged under separate operator and administrator access, CLI privilege levels 1, 7, and 15 allow distinct access assignments. Text-editable configuration files can be prepared for transfer between switches. Specify the required access roles, configuration file, and staging checks before the purchase order.
PoE power for attached endpoints
SX350X-24-K9 does not supply PoE. Phones, cameras, and access points requiring power through their network connections need a separate power source rather than a power allocation from this chassis.
Twenty-four copper connections plus fiber uplinks
SX350X-24-K9 shares four copper connections with four SFP+ interfaces. Using every fiber interface leaves 20 copper connections available; the chassis cannot provide 28 simultaneous network connections.
Cisco support beyond July 2027
SX350X-24-K9-NA reaches its last date of Cisco support on July 31, 2027. Specify C1300-24XT for the current migration path rather than the discontinued intermediate replacement.
Mon–Fri: [09:00-16:00]
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| SX350X-24-K9 |  SX350X-12-K9 |  SX350X-08-K9-UK |  SX350X-12-K9-UK |  SX350X-12-K9-EU | |
|---|---|---|---|---|---|
| Depth | 350 mm | 203 mm | 203 mm | 203 mm | 203 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 | SX350X-24-K9 | SX350X-12-K9 | SX350X-08-K9-UK | SX350X-12-K9-UK | SX350X-12-K9-EU |
| Memory | 512 MB | 512 MB | 512 MB | 512 MB | 512 MB |
| Power Consumption | 124.5W | 64.1W | 50.3W | 64.1W | 64.1W |
| Switching Capacity | 480 Gbps | 240 Gbps | 160 Gbps | 240 Gbps | 240 Gbps |
| Weight | 5.1 kg | 2.93 kg | 2.98 kg. | 2.93 kg | 2.93 kg |
| Width | 440 mm | 440 mm | 440 mm | 440 mm | 440 mm |
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SX350X-24-K9 identifies the 24-port 10GBASE-T stackable managed member of the 350X series, with four shared SFP+ interfaces. The 24 denotes the total network-port positions, including the shared pairs. A regional suffix completes the ordering form; SX350X-24-K9-NA is the North American version.
The Cisco 350X series supports an HTTP/HTTPS web interface, full or menu CLI over console, SSH or Telnet, and SNMP versions 1, 2c, and 3. Additional management paths include Smart Network Application, FindIT Network Manager with its embedded Probe, FindIT Network Discovery Utility, Active Advisor, and Network Plug and Play provisioning.
SX350X-24-K9 is discontinued; the North American SX350X-24-K9-NA reached end of sale July 30, 2022, with Cisco support ending July 31, 2027. Software maintenance ended July 30, 2023. The immediate replacement, CBS350-24XT-NA, is also discontinued; the current migration endpoint is C1300-24XT.
ORM Systems offers SX350X-24-K9 new sealed with up to a 3-year extended warranty or certified refurbished with up to a 1-year warranty. Both conditions include 30-day returns; terms apply. Cisco's separate limited lifetime hardware warranty is subject to eligibility and ends with service on July 31, 2027, for the North American regional version.
SX350X-24-K9 replaces SG350XG-24T-K9-AU, SG350XG-24T-K9-CN, SG350XG-24T-K9-EU, SG350XG-24T-K9-JP, SG350XG-24T-K9-NA, SG350XG-24T-K9-UK, SG550XG-24T-K9-AU, SG550XG-24T-K9-BR, and SG550XG-24T-K9-JP in corresponding regional forms. These discontinued predecessors reached end of sale June 18, 2020. Match the old full regional part number against the replacement on the purchase order rather than treating every country version as interchangeable.
SX350X-24-K9 supports 24 active network connections, not 28: 20 dedicated copper connections plus four copper/SFP+ combo connections. Each combo pair allows only one medium to operate at a time. Using all four fiber interfaces leaves 20 copper interfaces available for simultaneous traffic.
SX350X-24-K9 supports IPv4 and IPv6 static routing, with 990 IPv4 static routes and 128 IPv4 interfaces, plus 245 IPv6 static routes and 106 IPv6 interfaces. Routed interfaces can be physical ports, link aggregation groups, VLAN interfaces, or loopbacks. Route plans must remain within these limits.
SX350X-24-K9 supports a four-member hardware stack using 10G fiber or copper network interfaces, with ring or chain arrangements. Compatible stack families include SG350X, SG350XG, and SX350X. SFP-H10GB-CU1M=, SFP-H10GB-CU3M=, and SFP-H10GB-CU5M= provide 1 m, 3 m, and 5 m copper interconnect options, respectively.
SX350X-24-K9 draws a maximum of 124.5W at 220V AC; the corresponding 110V AC figure is 124.1W. The internal universal supply accepts 100-240V AC. Power planning should use the applicable input-voltage figure, and the supply powers the chassis rather than providing PoE to attached endpoints.
The 350X 24-port 10GBASE-T switch accepts SFP-10G-SR= for multimode fiber and SFP-10G-LR= for single-mode fiber in its shared SFP+ interfaces. SFP-10G-LR= supports distances through 10 km. Copper direct-attach options include SFP-H10GB-CU1M=, SFP-H10GB-CU3M=, and SFP-H10GB-CU5M=. Select connection media and matching far-end interfaces before specifying quantities.
Yes, the 350X 24-port copper switch occupies a 1U rack space and includes a mounting kit. The chassis measures 440 mm wide, 44 mm high, and 350 mm deep, with a weight of 5.1 kg. Four fans provide active cooling; allow cabinet space for cabling and airflow.
SG350X-24P-K9-NA supplies PoE+ with a shared 195W budget, whereas SX350X-24-K9 does not power endpoints. SG350X-24P-K9-NA also uses Gigabit access ports rather than 10GBASE-T. Both are discontinued: the former addresses powered Gigabit endpoints in legacy installations, while the latter addresses separately powered high-speed connections.
SX350X-24-K9 has 24 network-port positions, whereas SX350X-12-K9-NA has 12. Shared copper/SFP+ connections are included in those totals. Both models are discontinued. Existing installations needing the larger connection count fit the former; smaller legacy replacements fit the latter, with each purchase retaining its regional ordering requirements.
C1300-24XT is the current migration endpoint, whereas SX350X-24-K9 is discontinued and its North American form reaches last support July 31, 2027. The intermediate CBS350-24XT-NA is also discontinued. Choose the older hardware for an existing-installation replacement requirement; specify C1300-24XT when purchasing along the current migration path.
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