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SX350X-24-K9-NA
Cisco SX350X-24-K9-NA 350X 20-Port 10 Gigabit Switch, 4x10G...
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SX350X-24-K9-NA is a managed Layer 2+ switch with 20 dedicated 10GBASE-T access ports and four fixed 10G copper/SFP+ combo uplinks. Each combo connection supports one active medium, so using fiber disables its paired copper connector. The non-PoE 1U rack chassis connects servers, storage, and downstream switches that have their own power. Within Cisco Small Business switching, the Cisco 350X Series Stackable Managed Switches provide true horizontal stacking for four members under one IP address, with unified data and control planes. Compared with the discontinued SX350X-24F-K9-NA, this copper-oriented model has dedicated RJ-45 connections where the fiber-oriented model has dedicated SFP+ connections. The distinction matters when matching an existing cabling estate and deciding how many connections must remain copper rather than fiber.
SX350X-24-K9-NA price for new stock is is available on request. Get immediate quote. SX350X-24-K9-NA refurb price is $3,302.25.
Request bulk order quote for SX350X-24-K9-NA for additional pricing. Browse the full Cisco SX350X Switches series or explore all Cisco products.
480 Gbps switching capacity accommodates aggregate switching traffic, while 240 Mpps forwarding handles 64-byte packets. 990 static IPv4 routes support inter-VLAN forwarding without dynamic route exchange; IPv6 static routing supports 245 routes and 106 interfaces. SX350X-24-K9-NA combines 512 MB of DRAM, 256 MB of flash, and a 32000-entry MAC table for control software, stored images, and address learning. Across a segmented network, 4094 active VLANs and eight hardware queues provide separate traffic domains and queueing controls. STP, RSTP, MSTP, and LACP provide loop control and link aggregation, while DHCP snooping, IP Source Guard, and Dynamic ARP Inspection enforce address bindings. Browser configuration and a scriptable CLI support local administration, with simple and advanced web modes for different configuration tasks. 124.5W maximum consumption sets the electrical allowance for the chassis; four fans provide active cooling rather than silent operation. These limits distinguish electrical provisioning from traffic forwarding and software scale.
Specify SX350X-24-K9-NA in new sealed or certified refurbished condition, with required optics and quantity identified on the PO. Certified refurbished units are inspected and bench-tested, including power-on and POST, rated-speed port links, clean boot, optics bay recognition, fan and PSU status, firmware verification, and configuration wiped to factory default. ORM warranties provide up to a 3-year extended term for new units and up to 1 year for certified refurbished units; returns are 30 days on every condition, terms apply. Cisco's eligible limited lifetime hardware coverage ends July 31, 2027; PO acceptance, Net-30 for government, and RMA with advance replacement support enterprise and volume purchasing.
| Key Specs | Key Spec Values |
|---|---|
Port Configuration | 20 x 10GBASE-T / 4 x 10G copper/SFP+ combo |
Stacking | True horizontal stacking / 4 members |
Max Power Draw | 124.5W |
Replaces | SG350XG-24T-K9-NA / End of sale June 18, 2020 |
Lifecycle Status | End of sale July 30, 2022 |
Replacement PID | C1300-24XT |
When staging a storage-network change, the 3 MB packet buffer is shared across ports rather than dedicated to each connection. Include representative traffic mixes and iSCSI prioritization in acceptance testing, then specify the required configuration and staging quantity before releasing the purchase order.
When several sites must share an operating template, text-editable configuration files and secure SCP downloads support repeatable staging. SNMP v3 provides an authenticated monitoring path. Define the common configuration, management credentials, and per-site unit quantities on the purchasing schedule before issuing the PO.
When a branch purchase includes local address assignment, the IPv4 DHCP server supports multiple pools and scopes. The switch supports 128 IPv4 interfaces, allowing interface requirements to be reviewed alongside address services. Specify the intended pools, scopes, and interface allocation before approving the equipment quantity.
PoE-powered phones and access points
SX350X-24-K9-NA supplies no endpoint power. C1300-24P-4X provides 24 Gigabit PoE ports and four 10G SFP+ uplinks, but changes the copper downlinks from 10G to 1G.
24 copper ports plus four fiber uplinks
SX350X-24-K9-NA cannot run 24 copper connections plus four fiber connections simultaneously. Each SFP+ cage shares a network port with a copper connector, allowing only one active medium.
More than four stacked switches
350X hardware stacks support four members, not a larger combined system. A deployment requiring one managed hardware stack beyond that limit needs a different stacking architecture.
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| SX350X-24-K9-NA |  SX350X-24-K9-EU |  SX350X-24-K9 |  SX350X-12-K9-NA |  SX350X-24-K9-UK | |
|---|---|---|---|---|---|
| Depth | 350 mm | 350 mm | 350 mm | 203 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 | SX350X-24-K9-NA | SX350X-24-K9-EU | SX350X-24-K9 | SX350X-12-K9-NA | SX350X-24-K9-UK |
| Memory | 512 MB | 512 MB | 512 MB | 512 MB | 512 MB |
| Power Consumption | 124.5W | 124.5W | 124.5W | 64.1W | 124.5W |
| Switching Capacity | 480 Gbps | 480 Gbps | 480 Gbps | 240 Gbps | 480 Gbps |
| Weight | 5.1 kg | 5.1 kg | 5.1 kg | 2.93 kg | 5.1 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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SX350X-24-K9-NA identifies a Cisco 350X 24-port 10GBASE-T stackable managed switch for the NA region. SX350X-24 is the model, 24 denotes the network-port count, and NA covers the United States, Canada, Mexico, Colombia, Chile, and other Latin American markets outside separately designated regions.
SX350X-24-K9-NA has 24 usable network ports: 20 dedicated copper connections and four copper/SFP+ combo connections. The four SFP+ cages do not add four independent ports. A separate Gigabit out-of-band management interface provides administrative connectivity without consuming one of those network connections.
Cisco 350X Series Stackable Managed Switches support HTTP/HTTPS web management, CLI access through console, SSH, or Telnet, and SNMP 1, 2c, and 3. Network-level paths include Smart Network Application, FindIT Network Manager with the embedded FindIT Network Probe, and Active Advisor. FindIT Network Discovery Utility assists discovery, while Cisco Network Plug and Play supports provisioning.
No, SX350X-24-K9-NA is non-PoE and does not power endpoints through its network ports. Its internal AC input powers the switch itself, not attached phones, cameras, or access points. Specify separate endpoint power or a PoE-capable model when Ethernet-delivered power is a requirement.
Four switches form one hardware stack in the 350X series. Ring and chain layouts use 10G copper or fiber interfaces rather than dedicated stacking connectors. Supported copper interconnects include SFP-H10GB-CU1M=, SFP-H10GB-CU3M=, and SFP-H10GB-CU5M=; reserve the chosen interfaces before assigning network connections.
Yes, SX350X-24-K9-NA supports static routing between VLANs, with 990 IPv4 static routes and 128 IPv4 interfaces. IPv6 static routing supports 245 routes and 106 interfaces. Its routing capability is static rather than dynamic, so changing network paths requires an appropriate external routing design or configuration updates.
SFP-10G-SR= and SFP-10G-LR= are supported 10G fiber options for SX350X-24-K9-NA. SFP-10G-SR= uses multimode fiber over 26 m to 400 m, depending on the fiber, while SFP-10G-LR= uses single-mode fiber over 10 km. Order the selected optics separately and account for shared combo connections.
SX350X-24-K9-NA replaces SG350XG-24T-K9-NA, which ended sale on June 18, 2020. The older model's Cisco support ended June 30, 2025. SX350X-24-K9-NA is also discontinued, so a new standardization decision should follow the migration chain forward to C1300-24XT rather than stopping at the original replacement.
Yes, SX350X-24-K9-NA is discontinued, with end of sale on July 30, 2022, and last date of support on July 31, 2027. Software maintenance releases ended July 30, 2023. Its migration chain passes through the discontinued CBS350-24XT-NA to the current C1300-24XT.
SG350X-24P-K9-NA supplies PoE+ with a 195W budget, whereas SX350X-24-K9-NA supplies no endpoint power. Both are discontinued. The former also changes the downlinks to Gigabit Ethernet, so it suits an existing powered 1G estate; the latter suits existing 10G copper connections.
SX350X-24-K9-NA has 20 dedicated 10GBASE-T ports, whereas SX350X-24F-K9-NA has 20 dedicated 10G SFP+ ports. Each adds four shared copper/SFP+ connections. Both are discontinued; the copper model suits existing RJ-45 connections, while the fiber model suits an installed fiber estate requiring dedicated optical connections.
C1300-24XT is the current migration endpoint, whereas SX350X-24-K9-NA ended sale on July 30, 2022. The intermediate CBS350-24XT-NA is also discontinued. Both endpoint models provide 24 network connections with four shared SFP+ interfaces; C1300-24XT fits new standardization, while the SX350X model addresses existing installed estates.
ORM Systems offers SX350X-24-K9-NA new sealed or certified refurbished, with up to 3-year extended coverage for new units and up to 1 year for refurbished units. Returns are 30 days for every condition; terms apply. Cisco's separate limited lifetime hardware warranty remains subject to eligibility and ends with Cisco support on July 31, 2027.
United States
