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SG300-52P-K9
Cisco SG300-52P-K9 Small Business 300 48-Port Gigabit PoE+ S...
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SG300-52P-K9 combines 48 Gigabit PoE+ access ports with four fixed Gigabit uplink interfaces in a managed, rack-mount 1U switch for small-business networks. Two dedicated copper uplinks accompany two combo RJ-45/SFP uplinks; each combo pair accepts either a copper connection or a fiber connection, not both simultaneously. The Cisco Small Business 300 Series Managed Switches support office connectivity for powered voice endpoints and wired clients. Layer 2+ capability adds static IPv4 routing to Ethernet switching without making this a dynamic-routing switch. SRW2048-K9, the discontinued SG300-52 sibling, supplies the same total interface count without endpoint power. The distinction matters when an existing installation needs a like-for-like spare but its connected devices also depend on switch-delivered power.
SG300-52P-K9 price for new stock is $826.35, a 68.9% saving from the Cisco list price of $2,657.70. SG300-52P-K9 refurb price is $231.00. SG300-52P-K9 is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for SG300-52P-K9 for additional pricing. Browse the full Cisco 300 Series Managed Switches series or explore all Cisco products.
104 Gbps switching capacity provides the switching fabric rating, while 77.38 Mpps forwarding applies to 64-byte packets; these figures describe different processing limits. A 375W shared PoE budget supplies the powered access interfaces, so endpoint allocations must fit the combined allowance rather than treating every powered port as an independent power reservation. Static IPv4 routing supports 512 routes for local subnet connectivity, without dynamic route exchange. SG300-52P-K9 carries 128 MB of memory and 16 MB of flash for its embedded switch software and configuration. Administrators can use the browser interface, a console connection, CLI access over SSH or Telnet, and SNMP management. STP/RSTP/MSTP handle spanning-tree operation, while LACP provides negotiated link aggregation. These management and forwarding functions remain separate from endpoint power sizing: an acceptable traffic configuration does not establish that the attached powered devices fit the available electrical budget.
New sealed and certified refurbished SG300-52P-K9 units carry ORM warranty terms of up to 3-year extended coverage for new units and up to 1 year for certified refurbished units, plus 30-day returns on every condition; terms apply, and Cisco service ended October 31, 2023. Refurbished units are inspected and bench-tested, with PoE output verified under load on every powered port, firmware verified and configurations wiped to factory default. Specify condition, quantity and required hardware on the purchase order. ORM Systems accepts POs, offers Net-30 for government and RMA with advance replacement, and provides regional stock/RMA coverage across the UK, EU, US and MEA.
| Key Specs | Key Spec Values |
|---|---|
Port Configuration | 48x1G PoE+ / 2x1G copper / 2x1G combo |
PoE Budget | 375W shared |
Max Power Draw | 473.62W |
Lifecycle Status | End-of-sale October 4, 2018 / End-of-support October 31, 2023 |
Replacement PID | C1300-48P-4G |
A branch moving local subnet gateways onto its access switch can configure 128 IP interfaces. Build the interface plan around the required physical ports, VLAN interfaces and link aggregation groups, then stage gateway addresses and upstream reachability before deployment. Confirm the interface allocation before issuing the purchase order.
An office standardizing voice endpoint configuration can use automatic voice VLAN assignment and voice-specific traffic treatment. Support for 4096 simultaneous VLANs provides a defined segmentation ceiling, but the intended voice network still needs an explicit configuration plan. Specify voice VLAN membership and authentication requirements before ordering units for multiple locations.
10G uplinks to distribution
The fixed uplinks operate at Gigabit speed. C1300-48P-4X provides four 10G SFP+ uplinks alongside 48 Gigabit access ports for a migration requiring faster distribution connections.
Dynamic routing between local subnets
Routing uses static IPv4 routes rather than dynamic route exchange. A network requiring automatically learned routes needs a separate routing device instead of assigning that requirement to this switch.
Active Cisco service eligibility
Cisco service ended October 31, 2023. C1300-48P-4G is the migration endpoint for buyers replacing this retired generation rather than extending a legacy installation.
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| SG300-52P-K9 |  SF302-08 |  SG300-10P |  SF300-48PP-K9-EU |  SF302-08PP | |
|---|---|---|---|---|---|
| Depth | 350 mm | 10 inches | 9.5 inches | 11.2 inches | 8.17 in |
| Ethernet Technology | Gigabit Ethernet | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100 |
| Flash Memory | 16 MB | 32 MB | 32 MB | 256 MB | 32 MB |
| Form Factor | Rack-Mount 1U | Rack-mount | Desktop / Rack-mount | Rack-mount | Desktop / Rack-mount |
| Height | 44.45 mm | 1.75 inches | 1.73 inches | 1.73 inches | 1.38 in |
| Manufacturer Part Number | SG300-52P-K9 | SF302-08 | SG300-10P | SF300-48PP-K9-EU | SF302-08PP |
| Memory | 128 MB | 128 MB | 128 MB | 128 MB | 256 MB |
| Power Consumption | 473.62W | 15W | 33.6 W | 370 W | 15W |
| SFP Ports | 2 x 1GbE (Combo, shared with RJ-45) | 4 SFP Ports | Combo | 4 SFP Ports | Combo |
| Switching Capacity | 104 Gbps | 16 Gbps | 20 Gbps | 104 Gbps | 16 Gbps |
| Weight | 5.3 kg | 4 lbs | 6.6 lbs | 14.4 lbs | 6.6 lbs |
| Width | 440 mm | 17.5 inches | 17.3 inches | 17.3 inches | 17.5 in |
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SG300-52P-K9 identifies the Gigabit managed PoE+ model in the Small Business 300 family. SG300 identifies the family, 52 represents the total active interface count, and P distinguishes the powered model. K9 remains part of the complete ordering identifier. The configuration includes 48 powered access ports and four uplink interfaces.
Small Business 300 switches support a browser interface over HTTP or HTTPS, CLI access through SSH or Telnet, a local console connection, and SNMP management. Choose the management path before staging credentials and network access. Browser-based administration and command-line administration are alternative ways to configure the same managed hardware.
SG300-52P-K9 provides a shared 375W PoE budget across 48 powered access ports. The budget is a combined allowance, not a separate allocation available independently on every port. Prepare an endpoint power schedule before deployment, including the devices expected to operate together, and keep their combined allocation within that allowance.
SG300-52P-K9 has two dedicated Gigabit copper uplinks and two Gigabit combo RJ-45/SFP uplinks. Each combo interface shares its copper connection with its SFP connection, so only one medium operates on that interface at a time. Plan the active connection for each pair rather than counting both connectors as separate links.
Yes, SG300-52P-K9 supports static IPv4 routing with 512 routes and 128 IP interfaces. This is Layer 2+ functionality rather than dynamic routing. Establish the required gateway interfaces and static next hops during staging, then verify return paths through the upstream network before assigning production clients to those gateways.
SG300-52P-K9 uses a 1U rack-mount chassis measuring 440 mm wide, 44.45 mm high and 350 mm deep, with a weight of 5.3 kg. Check usable cabinet depth rather than nominal rack depth alone, and allow room for the installed connections when preparing the rack position and cable routing.
SG300-52P-K9 is discontinued: sale ended October 4, 2018, and Cisco support ended October 31, 2023. Its SG350-52P-K9-NA replacement and the subsequent CBS350-48P-4G-NA model are also discontinued. The migration chain reaches C1300-48P-4G; these are different generations, not interchangeable part numbers for a like-for-like spare.
ORM offers SG300-52P-K9 new sealed with up to a 3-year extended warranty, or certified refurbished with up to 1 year. Both conditions have 30-day returns; terms apply. Cisco's original limited lifetime hardware warranty ended with Cisco support on October 31, 2023. Refurbished managed units are firmware verified and wiped to factory default.
SG300-52P-K9 supplies PoE+ power on 48 access ports, while SRW2048-K9 is the non-PoE SG300-52 model. Both are discontinued members of the same family. For legacy sparing, the powered model matches installations with switch-powered endpoints; the non-PoE model matches installations where connected devices receive power separately.
SG300-52P-K9 provides 48 powered access ports, while SG300-28PP-K9 provides 24 powered access ports. Both models belong to the discontinued Small Business 300 family. A legacy spare must match the required access density: the larger model suits an existing full-density installation, while the smaller model suits a 24-endpoint configuration.
SG300-52P-K9 provides two SFP-capable combo uplinks plus two dedicated copper uplinks, while C1300-48P-4G provides four Gigabit SFP uplinks. The discontinued SG300 model suits a matching legacy spare requirement. C1300-48P-4G is the migration endpoint for buyers moving to the newer generation and requiring four fiber uplink connections.
SG300-52P-K9 has a maximum power consumption figure of 473.62W at 110V, including endpoint power delivery. Use the complete equipment draw when planning circuit and backup-power loading rather than treating the PoE allowance as the switch's total consumption. Check the combined load of other equipment sharing the same power circuit.
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