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SX350X-52-K9-NA
Cisco SX350X-52-K9-NA 350X 48-Port 10 Gigabit Ethernet Switc...
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SX350X-52-K9-NA is a managed Layer 2+ switch with 48 fixed 10GBase-T access ports and four dedicated 10G SFP+ uplinks in a 1U rack-mount chassis. The non-PoE configuration connects separately powered endpoints rather than supplying power to phones or access points. Cisco 350X Series switches serve small-business networks requiring managed switching and physical stacking. The discontinued SX350X-24-K9-NA provides 24 copper connections with shared copper/SFP+ positions, a lower-density arrangement with combo uplinks. Copper and SFP+ connections support 1G operation when connected to compatible equipment, allowing existing Gigabit links to remain in use alongside faster connections.
SX350X-52-K9-NA price for new stock is is available on request. Get immediate quote. SX350X-52-K9-NA refurb price is $6,840.75.
Request bulk order quote for SX350X-52-K9-NA for additional pricing. Browse the full Cisco SX350X Switches series or explore all Cisco products.
1040 Gbps switching capacity provides nonblocking switching across the network interfaces. 755.81 Mpps forwarding at 64-byte packet size defines small-frame processing capacity. Static IPv4 routing supports 990 routes and 128 IP interfaces for configured inter-VLAN forwarding; IPv6 static routing supports 245 routes and 106 interfaces. Dynamic routing is not supported. SX350X-52-K9-NA combines 512 MB of DRAM with 256 MB of flash for switch operation and image storage. The SX350X-52 also has a 10 MB packet buffer shared dynamically across its ports. STP/RSTP/MSTP manage redundant Layer 2 paths, while LACP supports eight aggregation groups with eight active ports per group. Support for 4094 active VLANs and 32000 MAC addresses accommodates segmented networks and their connected devices. Browser-based configuration, a scriptable CLI, and SNMP provide local administration and monitoring choices. 234.4W worst-case consumption at 110V supplies the switch-side reference for circuit sizing, separate from the power required by attached endpoints.
ORM Systems supplies SX350X-52-K9-NA new sealed or certified refurbished; refurbished units are inspected and bench-tested, with optics bay recognition, firmware verified, and configurations wiped to factory default. ORM offers up to a 3-year extended warranty on new units and up to 1 year on certified refurbished units, plus 30-day returns on every condition, terms apply; Cisco's limited lifetime hardware warranty is bounded by the July 31, 2027 last date of support. Specify condition, quantity, and accessories on the purchase order; POs are accepted, with Net-30 for government and RMA with advance replacement. Enterprise and volume orders have regional stock and RMA support across the UK, EU, US, and MEA.
| Key Specs | Key Spec Values |
|---|---|
Port Configuration | 48 x 10G copper / 4 x 10G SFP+ |
Stacking | True stacking / 4 members |
Max Power Draw | 234.4W |
Cooling | 5 fans |
Replaces | SG350XG-48T-K9-NA; end-of-sale June 18, 2020 |
Lifecycle Status | End-of-sale July 30, 2022; support ends July 31, 2027 |
When replacing an installed SG350XG-48T-K9-NA, start with the existing copper and fiber connection map rather than matching the older chassis label. The predecessor's Cisco support ended June 30, 2025. Identify reusable connection components and management settings, then specify the required condition and replacement quantity on the purchase order.
When several sites need a common staged configuration, text-editable configuration files and secure SCP downloads provide a shared preparation path. Dual software images retain an alternate image during upgrade work. Define the approved image, site-specific addressing, and configuration file handling before releasing a multi-unit purchase order for the rollout.
When a staging bench must inspect traffic before production handover, port mirroring can send traffic from eight source ports to one analyzer destination. Remote monitoring also supports history, statistics, alarms, and events. Specify the monitoring connections and configuration acceptance checks with the switch quantity before issuing the purchase order.
PoE-powered phones or access points
SX350X-52-K9-NA supplies no PoE on its copper ports. Endpoints requiring power from their access switch need a PoE-capable configuration rather than this model's separately powered endpoint arrangement.
Dynamic routing between routed networks
SX350X-52-K9-NA supports static IPv4 and IPv6 routes rather than dynamic routing. Requirements for automatic route discovery or topology exchange need a switch supporting the required dynamic routing protocols.
Fanless operation in occupied rooms
SX350X-52-K9-NA uses five fans, producing 47.9 dB at 0°C to 35°C and 60.4 dB at 50°C. A requirement for fanless operation excludes this chassis.
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| SX350X-52-K9-NA |  SX350X-24F-K9 |  SX350X-12-K9 |  SX350X-12-K9-UK |  SX350X-08-K9-NA | |
|---|---|---|---|---|---|
| Depth | 450 mm | 350 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-52-K9-NA | SX350X-24F-K9 | SX350X-12-K9 | SX350X-12-K9-UK | SX350X-08-K9-NA |
| Memory | 512 MB | 512 MB | 512 MB | 512 MB | 512 MB |
| Power Consumption | 234.4W | 39W | 64.1W | 64.1W | 50.3W |
| Switching Capacity | 1040 Gbps | 480 Gbps | 240 Gbps | 240 Gbps | 160 Gbps |
| Weight | 7.29 kg | 4.4 kg | 2.93 kg | 2.93 kg | 2.98 kg |
| Width | 440 mm | 440 mm | 440 mm | 440 mm | 440 mm |
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SX350X-52-K9-NA identifies the 350X 10G stackable model with 48 copper network ports, four dedicated SFP+ ports, and one Gigabit management port. The 52 denotes its network-port configuration. NA selects the regional variant for the United States, Canada, Mexico, Colombia, Chile, and the remaining Latin American markets.
SX350X-52-K9-NA supports HTTP/HTTPS browser management, console CLI, SSH, Telnet, and SNMP. Additional management choices include Smart Network Application, FindIT Network Manager, the embedded FindIT Network Probe, FindIT Network Discovery Utility, and Active Advisor. A dedicated Gigabit out-of-band management port provides a separate administration connection, and Cisco PnP Connect supports provisioning.
SX350X-52-K9-NA reached end of sale on July 30, 2022, and its last date of support is July 31, 2027. Software maintenance ended July 30, 2023. Its replacement, CBS350-48XT-4X-NA, is also discontinued, having reached end of sale on October 29, 2024, with no migration product available.
ORM Systems offers SX350X-52-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. Every condition has 30-day returns; terms apply. Cisco's separate limited lifetime hardware warranty is bounded by its July 31, 2027 last date of support.
SX350X-52-K9-NA replaces the discontinued SG350XG-48T-K9-NA, which reached end of sale on June 18, 2020, and last support on June 30, 2025. The older switch has two copper/SFP+ combo positions, whereas the replacement provides four dedicated SFP+ connections. Existing fiber connections therefore need review during replacement planning.
SX350X-52-K9-NA supports SFP-10G-SR= for 10G multimode fiber and SFP-10G-LR= for 10G single-mode fiber. Supported direct-attach options include SFP-H10GB-CU1M=, SFP-H10GB-CU3M=, and SFP-H10GB-CU5M= for 1 m, 3 m, and 5 m connections. Select the connection type and distance before ordering, and include the required connection components separately.
SX350X-52-K9-NA supports a hardware stack of four switches, managed as one system. SG350X, SG350XG, and SX350X models can be mixed within the stack. Ring and chain layouts use 10G network interfaces for interconnects, so the connection plan must reserve ports and include suitable components such as SFP-H10GB-CU1M=.
SX350X-52-K9-NA supports static IPv4 and IPv6 routing, with limits of 990 IPv4 routes and 245 IPv6 routes. The switch supports 128 IPv4 interfaces and 106 IPv6 interfaces. Routed interfaces can be configured on physical ports, link aggregation groups, VLAN interfaces, or loopback interfaces; dynamic routing is not supported.
SX350X-52-K9-NA uses an internal universal AC supply accepting 100-240V AC at 47-63 Hz. Worst-case system consumption is 234.4W at 110V and 229.2W at 220V. These figures cover the switch itself; the non-PoE configuration does not provide an endpoint power budget through its network ports.
SG350X-48P-K9-NA provides a 382W PoE budget, whereas SX350X-52-K9-NA supplies no PoE. The PoE model supports powered network endpoints, with 60W available on selected ports and 30W on other powered ports within its shared budget. The non-PoE model suits separately powered endpoints rather than devices depending on switch-supplied power.
SX350X-52-K9-NA provides 48 copper Ethernet connections, compared with 24 on the discontinued SX350X-24-K9-NA. Both belong to the 350X family and support its embedded management choices. For legacy replacement planning, the larger model matches denser copper connection requirements, while the 24-port model corresponds to smaller installed configurations.
SX350X-24F-K9-NA provides 24 SFP+ network positions, while SX350X-52-K9-NA primarily connects copper endpoints through 48 copper ports and four dedicated SFP+ uplinks. Four SFP+ positions on the discontinued fiber model share connections with copper ports. The fiber model matches fiber-heavy legacy installations; the copper model matches copper-heavy connection plans.
No, the SX350X-52 uses five cooling fans and is not a fanless switch. Acoustic noise is 47.9 dB at operating temperatures from 0°C to 35°C, increasing to 60.4 dB at 50°C. Installation planning must account for active cooling and noise rather than treating this chassis as silent desktop equipment.
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