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SG350-52P-K9
Cisco SG350-52P-K9 350 48-Port Gigabit PoE+ Switch, 2x1G SFP...
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SG350-52P-K9 is a Layer 2+ managed access switch with 48 Gigabit Ethernet PoE+ ports and four fixed 1G uplinks, combining two dedicated SFP cages with two copper/SFP combo connections. The Cisco 350 Series chassis uses a 1U rack-mount form factor. Each combo connection activates either its copper interface or its SFP interface, not both simultaneously, which determines the media choice for that uplink. Within the Cisco Small Business line, the powered access connections serve IP phones and wireless access points alongside computer connections. The discontinued SG350-52MP-K9 sibling carries a 740W PoE budget for a higher-power legacy configuration.
SG350-52P-K9 price for new stock is $1,140.30, a 33.9% saving from the Cisco list price of $1,724.00. SG350-52P-K9 refurb price is $334.95. SG350-52P-K9 is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for SG350-52P-K9 for additional pricing. Browse the full Cisco 350 Series Managed Switches series or explore all Cisco products.
104 Gbps switching capacity supports nonblocking operation across the native interfaces, while 77.38 Mpps forwarding handles 64-byte packet traffic. 375W of shared PoE power must be allocated across attached endpoints; eight powered ports support 60W, while the other powered ports support 30W each. Static IPv4 routing accommodates 990 manually configured routes for local inter-VLAN paths rather than dynamic route learning. SG350-52P-K9 uses 512 MB of DRAM and 256 MB of flash, with a 3 MB packet buffer dynamically shared across ports. STP/RSTP/MSTP provide loop control, and LACP supports link aggregation. A 16000-entry MAC table bounds learned Layer 2 addresses independently of the routing limit. 440W worst-case consumption with PoE establishes the upper input-power figure for UPS sizing at 110V. Three fans cool the chassis, and the 0°C to 50°C operating range sets the ambient-temperature boundary for installation.
SG350-52P-K9 is offered new sealed or certified refurbished, with ORM warranties of 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. Refurbished units are inspected and bench-tested for power-on and POST, every port linking at rated speed, clean boot, PoE output under load on every powered port, optics bay recognition, PSU status and fan status. Specify condition and quantity on the purchase order; Cisco's eligible limited lifetime hardware coverage ends October 31, 2026. Enterprise and volume orders are accepted by PO, with Net-30 for government, RMA with advance replacement, and regional stock/RMA in UK / EU / US / MEA.
| Key Specs | Key Spec Values |
|---|---|
Port Configuration | 48x1G PoE+ / 2x1G dedicated SFP / 2x1G combo |
PoE Budget | 375W |
Max Power Draw | 440W |
Cooling | 3 fans |
Lifecycle Status | End-of-sale October 30, 2021 / support ends October 31, 2026 |
Replacement PID | C1300-48P-4G (current) / CBS350-48P-4G-NA (discontinued) |
When an existing access design needs communication between local workgroups, the switch can provide 128 IP interfaces for its routed configuration. Map each required interface to the addressing and upstream-gateway plan before replacing hardware. Confirm that the proposed interface count fits the design before adding this switch to the PO.
When replacement units must be prepared in a lab before installation, Textview CLI privilege levels 1, 7 and 15 let the staging plan distinguish operator access. Define the required administrative role and configuration workflow before scheduling the bench session. Confirm console access and the intended privilege level before releasing the PO.
When one purchase order covers US and overseas locations, regional ordering identifiers need to match each destination rather than a shared base part number. SG350-52P-K9-NA is the US variant, while SG350-52P-K9-EU and SG350-52P-K9-UK identify other regional versions. Specify the destination and complete regional PID for each line before releasing the PO.
10G uplinks to distribution
SG350-52P-K9 fixes uplinks at 1G and has no uplink upgrade bay. C1300-48P-4X provides 48 Gigabit PoE access ports with four 10G SFP+ uplinks.
Dynamic route learning at access
SG350-52P-K9 provides static IPv4 routing rather than dynamic route learning. Designs requiring automatic routing-protocol exchange exceed the available local routing feature set.
Fanless operation in occupied rooms
SG350-52P-K9 uses three fans, with acoustic noise of 41.2dB at 0°C to 25°C and 54.2dB at 50°C. Fanless installation requirements are not met.
Mon–Fri: [09:00-16:00]
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| SG350-52P-K9 |  SF350-08 |  SF352-08P |  SG350-20 |  CBS350-8S-E-2G | |
|---|---|---|---|---|---|
| Depth | 350 mm | 7.8 inches | 11 inches | 10.9 inches | 9.6 inches |
| Ethernet Technology | Gigabit Ethernet | 10/100/1000 | 10/100 | 10/100/1000 | 10/100/1000 |
| Flash Memory | 256 MB | 32 MB | 32 MB | 64 MB | 64 MB |
| Form Factor | Rack-Mount 1U | Desktop / Rack-mount | Rack-mount | Desktop / Rack-mount | Desktop / Rack-mount |
| Height | 44 mm | 1.73 inches | 1.75 inches | 1.73 inches | 1.73 inches |
| Manufacturer Part Number | SG350-52P-K9 | SF350-08 | SF352-08P | SG350-20 | CBS350-8S-E-2G |
| Memory | 512 MB | 256 MB | 256 MB | 256 MB | 256 MB |
| Power Consumption | 440W | 15 W | 35 W | 28.7 W | 28 W |
| SFP Ports | 2 x 1GbE / 2 x 1GbE (Combo, shared with RJ-45) | Combo | Combo | Combo | 8 SFP Ports |
| Switching Capacity | 104 Gbps | 16 Gbps | 16 Gbps | 28 Gbps | 20 Gbps |
| Weight | 3.81 kg | 3.5 lbs | 5 lbs | 7.7 lbs | 8 lbs |
| Width | 440 mm | 8.66 inches | 17.5 inches | 17.5 inches | 17.3 inches |
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SG350-52P-K9 identifies the Gigabit 350 managed-switch family, a 52-port network configuration and the PoE+ variant marked P. The 52 connections comprise 48 access ports and four uplinks. Keep the complete K9-bearing identifier when ordering; SG350-52P-K9-NA is the US regional variant.
The Cisco 350 Series supports HTTP/HTTPS web management, Textview CLI over console, SSH or Telnet, SNMP, Cisco Smart Network Application, Cisco FindIT Network Manager with its Probe, and Cisco Active Advisor. The web interface offers simple and advanced modes, while Textview supports full and menu-based CLI operation.
Yes, SG350-52P-K9 reached end-of-sale October 30, 2021. Cisco's last support date is October 31, 2026, and software maintenance ended October 30, 2022. The current migration destination is C1300-48P-4G; the initial replacement, CBS350-48P-4G-NA, is also discontinued. Refresh purchases should follow the replacement chain to its current endpoint.
ORM Systems offers SG350-52P-K9 new sealed or certified refurbished, with up to a 3-year extended warranty for new units and up to 1 year for refurbished units. Returns are 30 days for either condition; terms apply. Cisco's limited lifetime coverage for eligible units ends October 31, 2026.
SG350-52P-K9 is the replacement family for SG300-52P-K9-AU, SG300-52P-K9-CN, SG300-52P-K9-EU, SG300-52P-K9-NA and SG300-52P-K9-UK through matching regional orders. SG350-52P-K9-NA is the US replacement identifier. Retain the regional suffix on a replacement purchase instead of assuming every country variant has identical regional ordering details.
375W is the shared PoE budget on SG350-52P-K9 across 48 powered Gigabit ports. Eight ports support 60W PoE, and the other powered ports support 30W each. Port maxima are not simultaneous entitlements: aggregate power delivery remains limited by the shared budget. Size endpoint demand before assigning powered ports.
Yes, SG350-52P-K9 provides 52 simultaneous network connections: 48 RJ-45 access ports and four uplinks comprising two dedicated SFP ports and two combo ports. Each combo connection supports either copper or SFP fiber, not both at once. Using the shared SFP cages does not increase the total active port count.
Cisco 350 Series Gigabit uplinks support MGBSX1, MGBLX1, MGBLH1, MGBT1, GLC-LH-SMD and GLC-BX-U. MGBSX1 reaches 500 m over multimode fiber; MGBLX1 reaches 10 km and MGBLH1 reaches 40 km over single-mode fiber. MGBT1 supports copper links to 100 m. Match media, distance and the far-end interface before ordering.
No, SG350-52P-K9 provides static IPv4 routing rather than a dynamic routing feature set. Its local routing capacity accommodates 990 manually configured routes, placing the switch in the Layer 2+ category. Networks requiring automatic route learning must keep that function on a separate routing device rather than expecting a software-tier upgrade.
No, SG350-52P-K9 uses a fixed internal AC supply without a second redundant PSU. Input is 100–240V AC at 50–60 Hz. Maximum consumption with PoE is 440W at 110V or 431W at 220V. Size upstream power protection for loaded input demand rather than treating the PoE budget as total draw.
SG350-52P-K9 requires 1U rack space and active cooling from three fans. The chassis is 440 mm wide, 44 mm high and 350 mm deep, with a weight of 3.81 kg. Operating ambient temperature is 0°C to 50°C. Accommodate chassis depth, cable clearance and unobstructed airflow when specifying the installation location.
SG350-52P-K9 has a 375W PoE budget, while the discontinued SG350-52MP-K9 has 740W. Both retain 48 powered Gigabit access ports, so aggregate endpoint power distinguishes these legacy configurations rather than access density. SG350-52P-K9 suits plans within 375W; SG350-52MP-K9 addresses higher-budget legacy requirements, not a current-family refresh.
SG350-52P-K9 carries 48 Gigabit access ports, whereas the discontinued SG350-28P-K9 carries 24. Both belong to the Cisco 350 Series, with their physical access density fixed by the selected chassis. SG350-52P-K9 suits a 48-endpoint legacy replacement; SG350-28P-K9 suits smaller installations needing 24 physical access connections.
C1300-48P-4G provides four dedicated 1G SFP uplinks, while SG350-52P-K9 uses two dedicated SFP ports plus two copper/SFP combo ports. C1300-48P-4G is the current migration destination, and SG350-52P-K9 is discontinued. Legacy replacements retaining combo copper uplinks fit SG350-52P-K9; current-family refreshes with dedicated fiber uplinks fit C1300-48P-4G.
United States
