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SG300-28MP-K9
Cisco SG300-28MP-K9 Small Business 300 24-Port Gigabit PoE+...
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SG300-28MP-K9 is a managed Layer 2+ Gigabit switch with 24 PoE+ access ports, two dedicated copper uplinks, and two copper/SFP combo uplinks. Each combo connection uses either its copper interface or its SFP interface, not both simultaneously. The rack-mount 1U chassis belongs to the Cisco 300 Series Switches and serves small-business access networks connecting computers, phones, and wireless access points. Fixed 1G uplinks provide copper or fiber connectivity without a removable uplink card. Compared with the discontinued SG300-28PP-K9, the SG300-28MP configuration increases the shared endpoint-power allowance from 180W to 375W while retaining the same access-port density.
SG300-28MP-K9 price for new stock is is available on request. Get immediate quote. SG300-28MP-K9 refurb price is $806.97.
Request bulk order quote for SG300-28MP-K9 for additional pricing. Browse the full Cisco 300 Series Managed Switches series or explore all Cisco products.
56 Gbps switching capacity supports wire-speed forwarding, while 41.67 Mpps forwarding performance applies to 64-byte packets. Static IPv4 routing provides manually configured paths rather than dynamic route learning; routing requires Layer 3 operating mode, while factory settings start in Layer 2 mode. SG300-28MP-K9 provides 128 MB of DRAM and 16 MB of flash for its software and management environment. STP / RSTP / MSTP control Layer 2 loops, and LACP supports eight aggregation groups with eight active ports per group. Browser-based administration supports HTTPS encryption, while SSH provides secure remote access. Four fans support operation from 0°C to 50°C, setting the installation's ambient-temperature boundary. 445W maximum input draw at 110V includes PoE loading, so size the electrical circuit and UPS against total consumption rather than endpoint power alone.
ORM Systems offers SG300-28MP-K9 new sealed with up to a 3-year extended warranty or certified refurbished with up to 1 year; 30-day returns apply to every condition, terms apply. Refurbished units are inspected and bench-tested for power-on and POST, rated-speed links on every port, clean boot, PoE output under load on every powered port, optics bay recognition, PSU status, and fan status; firmware is verified and configurations are wiped to factory default. Specify condition, quantity, and required optics before submitting the purchase order. PO accepted, Net-30 for government, and RMA with advance replacement support enterprise and volume orders; Cisco's former limited lifetime coverage ended August 31, 2023.
| Key Specs | Key Spec Values |
|---|---|
Port Configuration | 24x1G PoE+ / 2x1G copper uplinks / 2x1G combo uplinks |
PoE Budget | 375W shared |
Max Power Draw | 445W |
Cooling | 4 fans |
Lifecycle Status | Cisco support ended August 31, 2023 |
Replacement PID | C1300-24FP-4G |
When a branch rollout adds phones alongside existing data endpoints, the voice VLAN capability automatically assigns voice traffic and applies its quality-of-service treatment. Support for 4096 VLANs allows segmentation planning beyond the physical port layout. Specify the voice VLAN policy and endpoint assignments before issuing the purchase order.
When replacing a configured unit, staging must establish the intended operating mode and interface assignments before installation. The 300 Series supports 128 IP interfaces, so prepare the addressing plan separately from the physical patching schedule. Include configuration staging and the required administration connection in the purchase order instructions.
When several locations need a common spare, ORM regional stock and RMA handling span the UK, EU, US, and MEA. Standardize on SG300-28MP-K9 after matching the installed unit's exact identity and condition requirements. Put the destination, quantity, and intended sparing role on each purchase order.
10G uplinks to distribution
SG300-28MP-K9 uplinks stop at 1G. C1300-24FP-4X retains 24 Gigabit access ports and provides four 10G SFP+ uplinks for connections requiring greater uplink bandwidth.
Dynamic IPv4 route learning
SG300-28MP-K9 supports static IPv4 routes rather than dynamic routing exchanges. Networks requiring automatic route learning need a different routing device; this switch cannot fulfill that requirement.
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| SG300-28MP-K9 |  SRW2008P-K9-NA |  SG300-52 |  SG300-28SFP-K9 |  SG300-28MP-K9-NA | |
|---|---|---|---|---|---|
| Depth | 350 mm | 170 mm | 17.1 inches | 257 mm | 350 mm |
| Ethernet Technology | Gigabit Ethernet | Gigabit Ethernet | 10/100/1000 | Gigabit Ethernet | Gigabit Ethernet |
| Form Factor | Rack-Mount 1U | Desktop | Rack-mount | Rack-Mount 1U | Rack-Mount 1U |
| Height | 44.45 mm | 44.45 mm | 1.73 inches | 44.45 mm | 44.45 mm |
| Manufacturer Part Number | SG300-28MP-K9 | SRW2008P-K9-NA | SG300-52 | SG300-28SFP-K9 | SG300-28MP-K9-NA |
| SFP Ports | 2 x 1GbE (Combo, shared with RJ-45) | 2 x 1GbE (Combo, shared with RJ-45) | 4 SFP Ports | 26 x 1GbE / 2 x 1GbE (Combo, shared with RJ-45) | 2 x 1GbE (Combo, shared with RJ-45) |
| Switching Capacity | 56 Gbps | 20 Gbps | 104 Gbps | 56 Gbps | 56 Gbps |
| Width | 440 mm | 279.4 mm | 17.7 inches | 440 mm | 440 mm |
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Every device is inspected, bench-tested, and firmware-verified, with configurations wiped before dispatch. Additional testing can be arranged to confirm full working condition on request.
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SG300-28MP-K9 identifies a 300 Series Gigabit managed switch with 28 logical connections and maximum-PoE positioning. SG300 identifies the family, 28 covers access and uplink connections, and MP distinguishes the 375W PoE+ configuration. K9 completes the ordering identifier; specify the full part number when matching an existing unit.
The Cisco 300 Series supports browser-based configuration, HTTPS encryption, SSH remote access, and a serial-console CLI. Choose the administration path that matches the existing management workflow. For replacement staging, specify console connectivity when configuration must begin before the switch has a working connection to the management network.
SG300-28MP-K9 is discontinued: end of sale was August 2, 2018, and Cisco support ended August 31, 2023. The immediate replacement, SG350-28MP-K9-NA, is also discontinued. The forward replacement chain reaches C1300-24FP-4G, so distinguish legacy replacement stock from a current-generation purchase when preparing the hardware order.
ORM Systems offers SG300-28MP-K9 new sealed with up to a 3-year extended warranty or certified refurbished with up to 1 year. Returns are available for 30 days on every condition; terms apply. Cisco's original limited lifetime hardware warranty is no longer active because Cisco support ended August 31, 2023.
SG300-28MP-K9 provides a shared 375W PoE+ budget across 24 powered ports, with 30W available per port subject to the total allowance. All powered ports cannot draw their maximum simultaneously. List each endpoint's required allocation and check the combined demand before specifying the switch for an existing powered-device inventory.
SG300-28MP-K9 has two dedicated Gigabit copper uplinks and two Gigabit copper/SFP combo uplinks. MGBSX1 supports multimode fiber, while MGBLX1 supports single-mode fiber. A combo connection activates copper or fiber, not both together. Specify the transceiver PID and fiber medium when preparing the connection bill of materials.
SG300-28MP-K9 supports static IPv4 routing with 512 static routes and 128 IP interfaces. Routing requires Layer 3 operating mode; the factory default is Layer 2 mode. Decide the intended operating mode before configuration, and do not specify this model for a network that requires dynamic routing exchanges.
SG300-28MP-K9 uses an internal 100-240V AC power supply and reaches 445W worst-case consumption at 110V with PoE loading. The corresponding figure at 220V is 436W. Size the electrical feed and UPS using total input consumption, and specify the appropriate regional power cord with the hardware order.
The discontinued SG300-28MP-K9-AU replaces SF300-24MP-K9-AU, while the discontinued SG300-28MP-K9-CN replaces SF300-24MP-K9-CN. Those predecessor switches are 24-port 10/100 Max PoE models. For a legacy installation, match the regional ordering variant and endpoint requirements before selecting replacement stock, rather than assuming every regional identifier is interchangeable.
SG300-28MP-K9 supplies 375W of shared PoE+ power, while SG300-28PP-K9 supplies 180W across the same 24 powered access ports. Both models are discontinued. For legacy matching, the MP configuration suits the larger aggregate endpoint-power requirement; the PP configuration corresponds to an installation using the lower power allowance.
SG300-28MP-K9 has 24 powered Gigabit access ports, while SG300-52MP-K9 has 48 powered Gigabit access ports. Both models are discontinued. The smaller configuration matches a 24-endpoint legacy installation; the larger configuration matches an installation requiring twice that powered access-port density, so verify the installed connection count before ordering replacement stock.
C1300-24FP-4G provides four dedicated 1G SFP uplinks, while SG300-28MP-K9 combines two copper uplinks with two copper/SFP combo uplinks. The SG300 model is discontinued. SG300-28MP-K9 matches legacy copper/combo installations; C1300-24FP-4G is the current endpoint of the replacement chain for buyers standardizing on dedicated fiber uplink connections.
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