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SG350-52P-K9-NA
Cisco SG350-52P-K9-NA 350 48-Port Gigabit PoE+ Switch, 4x1G...
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SG350-52P-K9-NA is a managed Layer 2+ access switch with 48 Gigabit PoE+ ports and four fixed Gigabit uplink connections in a 1U rack-mount chassis. Two uplinks are dedicated SFP cages; two are copper/SFP combo connections that activate one medium at a time. The Cisco 350 Series serves small-business data, voice, security, and wireless networks. Powered access connections supply compatible phones, cameras, and wireless access points, while the uplinks connect the chassis to upstream equipment over copper or fiber. The discontinued SG350-52MP-K9-NA provides 740W of endpoint power as the larger-budget sibling. This 48-port Gigabit PoE managed switch uses built-in interfaces rather than a removable uplink bay, so the base port configuration requires no additional network card.
SG350-52P-K9-NA price for new stock is $1,573.95, a 65% saving from the Cisco list price of $4,500.00. SG350-52P-K9-NA refurb price is $863.99. SG350-52P-K9-NA is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for SG350-52P-K9-NA for additional pricing. Browse the full Cisco 350 Series Managed Switches series or explore all Cisco products.
104 Gbps switching capacity defines aggregate switching performance, while 77.38 Mpps forwarding applies to 64-byte packets. 375W of shared PoE power requires endpoint allocations to remain within the available total rather than assuming every powered port can deliver its individual maximum simultaneously. 990 static IPv4 routes support configured inter-network forwarding, with PBR selecting next hops through IPv4 or IPv6 ACL matches; dynamic route learning is not available. SG350-52P-K9-NA uses 512 MB DRAM for runtime operation and 256 MB flash for image storage. A 3 MB packet buffer is dynamically shared across connections rather than reserved for individual ports. STP/RSTP/MSTP control bridged loops, and LACP supports configured link aggregation. Browser access, CLI, and SNMP provide configuration and monitoring paths for the Cisco Small Business hardware. 440W worst-case consumption, including endpoint power, is the figure to use for upstream power planning. Three fans provide active cooling, requiring ventilation around the installed chassis.
ORM Systems offers SG350-52P-K9-NA new sealed or certified refurbished; refurbished units are inspected and bench-tested, with PoE output verified under load on every powered port and firmware verified before configuration is wiped to factory default. Specify condition, quantity, and required accessories on the PO; new units include up to 3-year extended ORM warranty, certified refurbished units up to 1 year, and both conditions allow 30-day returns, terms apply. Cisco's separate limited lifetime hardware warranty ends with Cisco support on October 31, 2026. Enterprise and volume orders can use accepted POs, Net-30 for government, and RMA with advance replacement across UK, EU, US, and MEA.
| Key Specs | Key Spec Values |
|---|---|
Port Configuration | 48x1G PoE+ / 2x1G SFP / 2x1G combo |
PoE Budget | 375W shared |
Max Power Draw | 440W including PoE |
Cooling | 3 fans |
Lifecycle Status | End of sale October 30, 2021. |
Replacement PID | Current C1300-48P-4G / CBS350-48P-4G-NA discontinued. |
When an endpoint refresh includes equipment requiring higher power, reserve the eight 60W-capable access ports for those devices. Power delivery still stops at the shared switch budget, so inventory each endpoint's requested draw and assign the higher-power connections explicitly before approving the purchase order.
When an existing installation adds separate IP networks without introducing dynamic route learning, the available 128 IP interfaces set an interface-planning boundary. Physical ports, aggregated links, VLAN interfaces, and loopback interfaces can carry routed configuration. Define the required interfaces and next-hop configuration before specifying the unit on the PO.
When a replacement is staged ahead of an equipment change, dual firmware images allow the boot image and backup image to be prepared separately. Keep the intended software image and configuration file with the staging requirements, and specify the required image-transfer and configuration checks before releasing the purchase order.
10G connections to distribution
SG350-52P-K9-NA tops out at 1G on its uplinks. C1300-48P-4X retains 48 Gigabit access ports with PoE while providing four 10G SFP+ uplinks.
Dynamic routing between IP networks
SG350-52P-K9-NA forwards between IP networks using static routes; deployments requiring automatic route learning need a different switch with dynamic routing support.
Fanless operation in occupied work areas
SG350-52P-K9-NA uses three fans, with acoustic noise reaching 54.2 dB at 50°C. Installations requiring fanless operation need a different chassis.
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| SG350-52P-K9-NA |  Cisco CBS350-8S-E-2G |  SG350-28MP |  SG350-52 |  SG350-10P | |
|---|---|---|---|---|---|
| Depth | 350 mm | 9.8 inches | 257 mm | 257 mm | 170 mm |
| Ethernet Technology | Gigabit Ethernet | 10/100/1000 | Gigabit Ethernet | Gigabit Ethernet | Gigabit Ethernet |
| Flash Memory | 256 MB | 64 MB | 256 MB | 256 MB | 256 MB |
| Form Factor | Rack-Mount 1U | Desktop / Rack-mount | Rack-Mount 1U | Rack-Mount 1U | Desktop |
| Height | 44 mm | 1.7 inches | 44 mm | 44 mm | 44 mm |
| Manufacturer Part Number | SG350-52P-K9-NA | Cisco CBS350-8S-E-2G | SG350-28MP | SG350-52 | SG350-10P |
| Memory | 512 MB | 256 MB | 512 MB | 512 MB | 512 MB |
| SFP Ports | 2 x 1GbE / 2 x 1GbE (Combo, shared with RJ-45) | 8 SFP Ports | 2 x 1GbE / 2 x 1GbE (Combo, shared with RJ-45) | 2 x 1GbE / 2 x 1GbE (Combo, shared with RJ-45) | 2 x 1GbE (Combo, shared with RJ-45) |
| Switching Capacity | 104 Gbps | 20 Gbps | 56 Gbps | 104 Gbps | 20 Gbps |
| Weight | 3.81 kg | 12 lbs | 3.37 kg. | 2.75 kg | 1.19 kg |
| Width | 440 mm | 17.3 inches | 440 mm | 440 mm | 280 mm |
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SG350-52P-K9-NA identifies a Gigabit 350 Series PoE model; 52 denotes 48 access ports plus four uplink connections, and P distinguishes PoE capability. NA is the regional suffix for the USA, Canada, Mexico, Colombia, Chile, and the rest of Latin America. Two uplinks are shared copper/SFP combo connections.
SG350-52P-K9-NA is managed through its HTTP/HTTPS web interface, full or menu-based CLI over the RJ-45 console, SSH or Telnet, and SNMP versions 1, 2c, or 3. Network-level options include Smart Network Application, Cisco FindIT Network Manager with the embedded FindIT Network Probe, and Cisco Active Advisor. The web interface offers simple and advanced modes.
SG350-52P-K9-NA shares 375W across 48 powered access ports, eight of which support 60W; the remaining powered ports support 30W per port. Individual maximums do not mean all ports can draw maximum power together. Assign endpoint budgets to the available total and reserve higher-power connections for devices that require them.
SG350-52P-K9-NA has four independent 1G uplink connections: two dedicated SFP ports and two copper/SFP combo ports. Each combo connection activates either its copper interface or its SFP interface, not both simultaneously. Switching a combo connection to fiber therefore does not add another independent network port.
Yes, SG350-52P-K9-NA supports static IPv4 routing between IP networks, with 990 static routes and 128 IP interfaces, plus PBR for IPv4 or IPv6 ACL-based next-hop selection. Its Layer 2+ capability does not include dynamic route learning. Size the configured route table and interfaces before using the chassis as an inter-network gateway.
SG350-52P-K9-NA requires a 1U rack position for its 44 mm-high, 440 mm-wide, and 350 mm-deep chassis. The unit weighs 3.81 kg and ships with a mounting kit. Include chassis depth, front patch-cord clearance, and space for ventilation in the layout before assigning the final rack location.
SG350-52P-K9-NA uses internal AC power at 100-240V AC and 50-60 Hz, with worst-case consumption of 440W including PoE at 110V. The corresponding 220V figure is 431W. Size upstream branch-circuit and backup-power capacity against the with-PoE consumption rather than the smaller system-only consumption figure.
Yes, SG350-52P-K9-NA is discontinued: end of sale was October 30, 2021, and its last date of support is October 31, 2026. Software maintenance ended October 30, 2022. Its original successor, CBS350-48P-4G-NA, also ended sale on October 29, 2024; C1300-48P-4G is the current migration model.
SG350-52P-K9-NA is the replacement for SG300-52P-K9-NA. Buyers maintaining the older 52-port Gigabit PoE installation should match the actual uplink media and powered-endpoint requirements to the replacement chassis. A replacement designation does not mean existing optics, cabling, and configuration files can be transferred without checking their compatibility.
ORM Systems offers SG350-52P-K9-NA new sealed or certified refurbished, with new-unit extended warranty up to 3 years and refurbished-unit warranty up to 1 year. Returns are available for 30 days in either condition; terms apply. Cisco's separate limited lifetime hardware warranty is bounded by the last support date, October 31, 2026.
SG350-52P-K9-NA shares 375W of PoE power where SG350-52MP-K9-NA offers 740W. Both are discontinued hardware; the larger budget does not change per-port limits. Buyers maintaining the legacy family can match the 375W variant to lighter endpoint loads and the 740W variant to higher aggregate power requirements.
SG350-52P-K9-NA provides 48 Gigabit access ports where SG350-28P-K9-NA provides 24. Both models are discontinued members of the 350 Series; this comparison serves buyers maintaining existing installations. The larger model matches denser patch-panel layouts, while the smaller model matches a 24-connection legacy layout with lower connection density.
C1300-48P-4G has four dedicated 1G SFP uplinks, while SG350-52P-K9-NA has two dedicated SFP uplinks plus two copper/SFP combo connections. The SG350-52P-K9-NA model is discontinued. C1300-48P-4G suits successor replacement orders requiring four dedicated SFP connections; the legacy model matches installations retaining the original combo-uplink arrangement.
Cisco 350 Series Managed Switches support STP/RSTP/MSTP, LACP, and 4094 simultaneous VLANs. LACP allows eight aggregation groups, with eight active ports per group and 16 candidate ports for each dynamic group. Configure VLAN membership, spanning-tree behavior, and aggregation membership to match the connected network before moving the unit from staging into service.
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