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SG350X-24-K9
Cisco SG350X-24-K9 350X 24-Port Gigabit Switch, 2x10G SFP+ a...
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SG350X-24-K9 is a managed Layer 2+ switch with 24 Gigabit Ethernet access ports and four fixed 10G uplinks: two dedicated SFP+ ports and two shared copper/SFP+ combo ports. Each combo connection uses either its copper interface or its optical interface, not both simultaneously. The non-PoE access ports connect separately powered computers, printers, servers, and other Ethernet devices. Its full-width 1U chassis belongs to the Cisco 350X Series Stackable Managed Switches, positioned for small-business networks requiring configurable switching rather than unmanaged connectivity. Copper uplinks accommodate twisted-pair connections, while the optical interfaces support fiber connections selected for the required medium and distance. The discontinued SG350X-24P-K9-NA differs by adding PoE+ endpoint power. No removable uplink card is required because the uplink interfaces are built into the chassis.
SG350X-24-K9 price for new stock is $801.15, a 21% saving from the Cisco list price of $1,014.75. SG350X-24-K9 refurb price is $667.64. SG350X-24-K9 is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for SG350X-24-K9 for additional pricing. Browse the full Cisco SG350X Switches series or explore all Cisco products.
128 Gbps switching capacity supports nonblocking forwarding across the installed interfaces. 95.23 Mpps forwarding performance specifies packet handling with 64-byte packets, separating packet-rate requirements from bandwidth requirements. Static IPv4 and IPv6 routing permits communication between configured networks without dynamic routing adjacency support. The IPv4 routing limit accommodates 990 static routes and 128 IP interfaces; IPv6 supports 245 static routes and 106 interfaces. SG350X-24-K9 combines 512 MB of DRAM with 256 MB of flash for its embedded software and configuration functions. The Cisco SG350X-24 shares a 1.5 MB packet buffer across its ports, while its MAC table accommodates 16000 addresses. STP/RSTP/MSTP provide loop-control options, and LACP supports negotiated link aggregation. Administrators can use browser-based configuration or a scriptable CLI, with SNMP available for monitoring integration. DHCP snooping, IP Source Guard, and Dynamic ARP Inspection provide access-port security controls. Dual software images preserve an alternate image for firmware maintenance rather than requiring a single-image upgrade workflow.
Specify SG350X-24-K9 as new sealed or certified refurbished, with 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. Certified refurbished units are inspected and bench-tested for power-on and POST, rated-speed port links, clean boot, optics recognition, PSU status, and fan status, with firmware verified and configuration wiped to factory default. Confirm the regional ordering form and required accessories before submitting the PO; Cisco's separate limited lifetime hardware warranty ends with support on October 31, 2026. For enterprise and volume orders, PO accepted, Net-30 for government, and RMA with advance replacement apply, with regional stock and RMA across UK, EU, US, and MEA.
| Key Specs | Key Spec Values |
|---|---|
Port Configuration | 24x1G / 2x10G SFP+ / 2x10G combo |
Stacking | Hardware stacking / 4 members |
Max Power Draw | 32.6W |
Cooling | 1 fan |
Lifecycle Status | End of sale October 30, 2021 |
Replacement PID | C1300-24T-4X |
When several sites need a common configuration baseline, text-editable configuration files and SCP transfer support repeatable staging. Cisco Network Plug and Play supports provisioning, while CLI privilege levels 1, 7, and 15 separate administrative access. Specify the configuration baseline, provisioning method, and administrator privilege assignments before issuing the purchase order.
An existing hardware stack requiring another member can use ring or chain connections and link aggregation across different members. Mixed stacks support SG350X, SG350XG, and SX350X switches, allowing Gigabit and 10 Gigabit equipment within the same stack. Confirm the intended members, interconnect media, and physical topology before ordering the expansion hardware.
A staging lab investigating application traffic can mirror eight source ports to a destination port and export sFlow samples to an external collector. RSPAN also carries mirrored traffic across a Layer 2 domain. Specify the analyzer connection, collector destination, and required mirroring configuration before purchasing switches for the test environment.
Endpoint power through Ethernet
SG350X-24-K9 supplies no endpoint power over Ethernet. C1300-24P-4X is the current 24-port Gigabit PoE migration option, with four 10G SFP+ uplinks.
Dynamic routing between networks
SG350X-24-K9 supports configured IPv4 and IPv6 static routes, but does not form dynamic routing adjacencies or learn routes through a dynamic routing protocol.
Cisco support after October 2026
Cisco support for SG350X-24-K9 ends October 31, 2026. C1300-24T-4X is the current successor for a 24-port Gigabit configuration with four 10G SFP+ uplinks.
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| Depth | 257 mm | 350 mm | 350 mm | 252.5 mm | 350 mm |
| Ethernet Technology | Gigabit Ethernet | 10 Gigabit Ethernet | Gigabit Ethernet | Multi-Gigabit (2.5G/5G) | 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 | Desktop | Rack-Mount 1U |
| Height | 44 mm | 44 mm | 44 mm | 44 mm | 44 mm |
| Manufacturer Part Number | SG350X-24-K9 | SG350XG-2F10 | SG350X-24P-K9-NA | SG350X-8PMD-K9-NA | SG350X-48P-K9-UK |
| Memory | 512 MB | 512 MB | 512 MB | 512 MB | 512 MB |
| Power Consumption | 32.6W | 83.9W | 268.3W | 312.4W | 492.3W |
| Switching Capacity | 128 Gbps | 240 Gbps | 128 Gbps | 80 Gbps | 176 Gbps |
| Weight | 4.32 kg | 4.03 kg | 4.93 kg | 2.74 kg. | 5.82 kg |
| Width | 440 mm | 440 mm | 440 mm | 344.4 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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SG350X-24-K9 identifies a Cisco 350X Gigabit stackable managed switch with 24 non-PoE access ports and four 10G uplinks. SG350X identifies the Gigabit stackable model group, and 24 denotes its access-port count. Regional ordering forms add a country suffix; SG350X-24-K9-NA is the form for the United States and other designated Americas markets.
SG350X-24-K9 is managed through an HTTP/HTTPS web interface, console CLI, SSH, Telnet, SNMP versions 1/2c/3, and Smart Network Application. Cisco FindIT Network Manager and Active Advisor provide additional management integrations, with an embedded FindIT Network Probe. Full and menu CLI modes support administration; this model has no dedicated out-of-band Ethernet management port.
SG350X-24-K9 reached end of sale on October 30, 2021, and its last date of Cisco support is October 31, 2026. Software maintenance ended October 30, 2022. The original replacement, CBS350-24T-4X-NA, is also discontinued; the migration chain now leads to C1300-24T-4X rather than stopping at the intermediate model.
ORM supplies SG350X-24-K9 new sealed or certified refurbished, with up to a 3-year extended warranty on new units and up to 1 year on certified refurbished units. Every condition has 30-day returns; terms apply. Cisco's separate limited lifetime hardware warranty remains subject to eligibility and ends with Cisco support on October 31, 2026.
SG350X-24-K9 replaced discontinued SF550X-24-K9-AR, SF550X-24-K9-AU, SF550X-24-K9-BR, SF550X-24-K9-EU, SF550X-24-K9-NA, and SF550X-24-K9-UK models, whose end-of-sale date was June 18, 2020. China migrations cover SF550X-24-K9-CN, end-of-sale February 19, 2019, and SG250X-24-K9-CN, end-of-sale June 5, 2020. These regional replacement relationships do not establish cross-generation stacking compatibility.
SG350X-24-K9 provides two dedicated 10G SFP+ uplinks and two 10G copper/SFP+ combo uplinks, with one interface active per combo pair. Supported fiber options include SFP-10G-SR= for multimode fiber and SFP-10G-LR= for single-mode fiber. Select optics separately and match the remote interface, fiber type, and required connection distance.
Cisco 350X hardware stacking supports four members using 10G copper or fiber interfaces, with ring and chain topologies. Mixed stacks support SG350X, SG350XG, and SX350X models. Supported direct-attach cable options include SFP-H10GB-CU1M= at 1 m, SFP-H10GB-CU3M= at 3 m, and SFP-H10GB-CU5M= at 5 m; stacking connections consume selected network interfaces.
Yes, SG350X-24-K9 supports static routing between configured networks, including VLAN interfaces. IPv4 supports 990 static routes and 128 IP interfaces, while IPv6 supports 245 static routes and 106 interfaces. This is Layer 2+ functionality: routes require configuration rather than discovery through a dynamic routing protocol, so route maintenance remains an administrative task.
The Cisco SG350X-24 uses an internal universal 100-240V AC supply and occupies 1U of rack space. Its chassis measures 440 mm wide, 44 mm high, and 257 mm deep, with a weight of 4.32 kg. Maximum system consumption is 32.6W, and the original package includes a mounting kit.
SG350X-24P-K9-NA adds PoE+ endpoint power with a shared 195W budget, while SG350X-24-K9 has data-only access ports. Both provide 24 Gigabit access connections and four 10G uplinks. Both are discontinued: the powered model addresses legacy powered-endpoint requirements, while the non-PoE model serves devices with their own power supplies.
SG350X-48-K9-NA provides 48 Gigabit access ports, compared with 24 on SG350X-24-K9, while retaining four 10G uplinks. Both are non-PoE models and both are discontinued. The larger model addresses higher connection counts in an existing installation; the smaller model covers a lower-density requirement without changing the uplink arrangement.
C1300-24T-4X uses four 10G SFP+ uplinks, whereas SG350X-24-K9 combines two dedicated SFP+ uplinks with two copper/SFP+ combo uplinks. Both provide 24 Gigabit access ports. The discontinued 350X model accommodates legacy copper-uplink arrangements; the current Catalyst 1300 successor suits buyers specifying an all-SFP+ uplink configuration for a new purchase.