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SG500-28P-K9-NA
Cisco SG500-28P-K9-NA Small Business 500 24-Port Gigabit PoE...
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SG500-28P-K9-NA is a managed Layer 2+ Gigabit access switch with 24 PoE+ downlinks and four fixed Gigabit uplink interfaces in a rack-mount 1U chassis. Two uplinks are copper/SFP combo connections, while two use SFP cages that also support stacking connections. The Cisco Small Business 500 Series serves IP phones, wireless access points and other powered network devices. Each combo interface activates either its copper connection or its fiber connection, not both simultaneously. The discontinued SG500-28MPP-K9 differs through its 740W aggregate PoE budget. The Cisco SG500-28P can assign phone traffic to a dedicated voice VLAN, while Auto Smartports applies port settings according to the connected device.
SG500-28P-K9-NA price for new stock is is available on request. Get immediate quote. SG500-28P-K9-NA refurb price is $558.48.
Request bulk order quote for SG500-28P-K9-NA for additional pricing. Browse the full Cisco SG500 Switches series or explore all Cisco products.
72 Gbps switching capacity handles switching traffic across the chassis. 41.67 Mpps forwarding at 64-byte packets establishes the small-frame packet-rate limit for workload sizing. 180W of shared PoE output requires allocating endpoint draw rather than assuming maximum output on every powered port. Static IPv4 and static IPv6 routing carry traffic between subnets; RIP v2 and VRRP are not supported on this model. SG500-28P-K9-NA uses 256 MB of DRAM and 32 MB of flash, with an 8 Mb shared packet buffer accommodating transient queuing across ports. STP/RSTP/MSTP control switched topologies, and LACP aggregates compatible links. Administrators configure the embedded software through an HTTP/HTTPS browser interface or Textview CLI over SSH/Telnet. SNMP v1/v2c/v3 supports management-system integration, while SSH provides an encrypted command-line path instead of Telnet. 227W maximum consumption at 110V belongs in upstream power sizing, including the connected PoE load.
ORM Systems offers SG500-28P-K9-NA new sealed or certified refurbished; refurbished units are inspected and bench-tested for clean boot, rated-speed port links and PoE output under load on every powered port. Firmware is verified and configuration wiped to factory default; specify condition, quantity and required accessories on the purchase order. ORM warranty is up to a 3-year extended term for new units and up to 1 year for certified refurbished units, with 30-day returns on every condition, terms apply; Cisco's limited lifetime hardware warranty ended April 30, 2023. Enterprise and volume orders can use purchase orders, Net-30 for government and RMA with advance replacement, with regional stock and RMA across the UK, EU, US and MEA.
| Key Specs | Key Spec Values |
|---|---|
Port Configuration | 24x1G PoE+ / 2x1G combo / 2x1G SFP |
PoE Budget | 180W shared |
Stacking | Hardware stacking / 8 members / 5G copper connections |
Max Power Draw | 227W at 110V |
Lifecycle Status | Cisco support ended April 30, 2023 |
Replacement PID | C1300-24P-4X |
When separate workgroups need inter-VLAN communication without a dynamic routing design, routed interfaces can reside on physical ports, link aggregation groups, VLANs and loopbacks. The IPv4 interface limit is 256, so specify the required routed-interface layout and static next hops before placing the purchase order.
When an installed stack needs another member rather than a complete equipment change, ring and chain topologies provide two connection layouts. Mixed stacking covers the discontinued SF500, SG500 and SG500X families; identify the existing members, operating modes and connection layout before ordering an expansion unit.
When a staging bench must validate a saved switching configuration before maintenance, dual software images allow an alternate image to remain available during firmware work. Identify the intended image and recovery image separately, then specify the required condition and preparation state on the purchase order.
10G uplinks to distribution
The fixed uplink interfaces operate at 1G, not 10G. C1300-24P-4X retains 24 Gigabit PoE access ports and provides four 10G SFP+ uplinks.
Maximum PoE+ across every port
The 180W shared budget cannot supply 30W simultaneously to all 24 powered ports. Specify aggregate endpoint demand rather than relying solely on the individual port rating.
Active Cisco hardware support
Cisco support ended April 30, 2023, so new sealed condition does not restore manufacturer support. C1300-24P-4X is the current endpoint of the migration chain.
Mon–Fri: [09:00-16:00]
Avg. response under 30 mins
| SG500-28P-K9-NA |  SG500-52 |  SG500-52P-K9 |  SG500-52P |  SG500-52-K9 | |
|---|---|---|---|---|---|
| Depth | 257 mm | 257 mm | 350 mm | 350 mm | 257 mm |
| Ethernet Technology | Gigabit Ethernet | Gigabit Ethernet | Gigabit Ethernet | Gigabit Ethernet | Gigabit Ethernet |
| 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 | SG500-28P-K9-NA | SG500-52 | SG500-52P-K9 | SG500-52P | SG500-52-K9 |
| Power Consumption | 227W | 47W | 460.5W | 460.5W. | 47W |
| SFP Ports | 2 x 1GbE / 2 x 1GbE (Combo, shared with RJ-45) | 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) / 2 x 1GbE | 2 x 1GbE (Combo, shared with RJ-45) |
| Switching Capacity | 72 Gbps | 120 Gbps | 120 Gbps | 120 Gbps | 120 Gbps |
| Weight | 3.95 kg | 3.95 kg. | 5.61 kg | 5.61 kg. | 3.95 kg |
| Width | 440 mm | 440 mm | 440 mm | 440 mm | 440 mm |
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SG500-28P-K9-NA identifies the Gigabit 500 Series PoE model with 28 network interfaces: 24 copper access ports and four uplink interfaces. The P configuration supplies PoE+; K9-NA completes the full ordering identity. Two uplinks are combo connections, rather than additional independent copper and fiber ports.
SG500-28P-K9-NA is managed through an HTTP/HTTPS web interface, Textview CLI over SSH/Telnet and SNMP v1/v2c/v3. The embedded configuration utility handles configuration, maintenance and monitoring, while Cisco FindIT discovers devices and displays basic device information. SSH provides an encrypted alternative to Telnet for command-line access.
180W is the shared PoE budget for SG500-28P-K9-NA across 24 powered Gigabit ports. Individual ports support 30W PoE+, but maximum per-port output is not available on every powered port simultaneously. Allocate endpoint demand against the aggregate budget before specifying phones, access points or other powered devices.
SG500-28P-K9-NA has two Gigabit copper/SFP combo uplinks and two additional SFP interfaces supporting 1G Ethernet or 5G copper stacking. MGBSX1 supports multimode fiber, while MGBLX1 supports single-mode fiber. Each combo connection activates only one medium at a time, so copper and fiber sides are not independent ports.
Yes, SG500-28P-K9-NA supports hardware stacks of eight members with 5G copper stacking connections. Choose SFP-H10GB-CU1M, SFP-H10GB-CU3M or SFP-H10GB-CU5M for 1 m, 3 m or 5 m runs. Ring and chain layouts are supported; these connections do not provide 10G Ethernet uplinks on this model.
Static IPv4 and static IPv6 routing are supported by SG500-28P-K9-NA; RIP v2 and VRRP are excluded from this model. IPv4 supports 2048 static routes and 256 IP interfaces, while IPv6 supports 2048 static routes and 128 interfaces. Plan inter-VLAN communication around static next hops rather than dynamic route exchange.
No, SG500-28P-K9-NA is no longer supported by Cisco: end of sale was April 12, 2018, and support ended April 30, 2023. The migration line continues through the discontinued 550X and CBS350 families to C1300-24P-4X. Purchasing unused hardware does not restart Cisco support for the retired model.
SG500-28P-K9-NA is offered new sealed with up to a 3-year extended ORM warranty or certified refurbished with up to 1 year of ORM warranty. Both conditions have 30-day returns; terms apply. Cisco's limited lifetime hardware warranty ended with support on April 30, 2023. Refurbished units are inspected, bench-tested, firmware verified and wiped to factory default.
SG500-28P-K9-NA has a 180W PoE budget, while the discontinued SG500-28MPP-K9 has 740W across the same 24 powered Gigabit access ports. The distinction is aggregate endpoint power rather than additional access connections. The P model fits lower-total-load legacy replacements; the MPP model corresponds to higher-load legacy installations.
SG500-52P-K9 provides 48 powered Gigabit access ports, compared with 24 on SG500-28P-K9-NA. These quantities describe access connections rather than the combined access-and-uplink numbers in the model names. Both models are discontinued: the 28P matches smaller legacy access panels, while the 52P corresponds to denser legacy panels.
C1300-24P-4X offers four 10G SFP+ uplinks, whereas SG500-28P-K9-NA uses 1G Ethernet uplink interfaces. C1300-24P-4X is the current migration endpoint after the discontinued 550X and CBS350 generations. The legacy SG500 model serves exact-hardware replacement requirements; the current model serves buyers requiring faster distribution connections.
227W at 110V is the maximum power-consumption figure for the Cisco SG500-28P; the corresponding maximum at 220V is 221.5W. Those figures include PoE loading and are not the endpoint power budget. The internal AC input accepts 100–240V, so size upstream power and backup capacity for loaded operation.
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