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SG300-28MP-K9-NA
Cisco SG300-28MP-K9-NA Small Business 300 24-Port Gigabit Po...
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SG300-28MP-K9-NA provides 24 Gigabit PoE+ access ports in a managed Layer 2+ rack-mount switch, with two additional Gigabit copper uplinks and two Gigabit copper/SFP combo uplinks. The Small Business 300 chassis occupies 1U and combines powered endpoint connections with copper or fiber connectivity toward the rest of the network. Its internal AC supply powers the chassis directly rather than through a desktop adapter. Cisco 300 Series Switches provide local configuration and traffic controls for connecting office equipment, compatible phones and wireless access points. Compared with the discontinued SG300-28PP-K9 and its 180W allowance, this Max-PoE version allocates more power to attached endpoints. The uplink arrangement is fixed: a removable uplink card cannot change the connection mix after purchase.
SG300-28MP-K9-NA price for new stock is is available on request. Get immediate quote. SG300-28MP-K9-NA refurb price is $266.44.
Request bulk order quote for SG300-28MP-K9-NA for additional pricing. Browse the full Cisco 300 Series Managed Switches series or explore all Cisco products.
56 Gbps switching capacity provides wire-speed, nonblocking forwarding across the fixed interfaces. 41.67 Mpps forwarding at 64-byte packet sizes establishes the small-packet throughput available for traffic sizing. 375W of shared PoE capacity must be allocated across connected endpoints rather than treated as an individual-port guarantee. Static IPv4 routing supports 512 routes for inter-VLAN paths without a dynamic routing configuration. SG300-28MP-K9-NA supports 4096 VLANs for segmentation, while STP/RSTP/MSTP and LACP control redundant Layer 2 connections. Administrators can configure the switch through a browser-based interface or CLI, choosing HTTPS or SSH for encrypted sessions. The interface choices allow browser-based administration and command-line configuration without changing the installed hardware. 445W maximum power consumption provides the equipment load to use when sizing the electrical circuit, rather than substituting the endpoint power allowance. Four fans make airflow clearance part of rack preparation rather than a fanless installation assumption.
Specify SG300-28MP-K9-NA condition, quantity and required optics on the purchase order: ORM Systems offers new sealed and certified refurbished units, with up to a 3-year extended warranty on new units, up to 1 year on certified refurbished units, and 30-day returns on every condition; terms apply. Cisco's limited lifetime hardware warranty and service ended August 31, 2023. Refurbished units are inspected and bench-tested, including PoE output under load on every powered port, with firmware verified and configuration wiped to factory default. PO accepted, Net-30 for government, RMA with advance replacement, and regional stock/RMA in the UK, EU, US and MEA support enterprise and volume orders.
| Key Specs | Key Spec Values |
|---|---|
Port Configuration | 24 x 1G PoE+, 2 x 1G, 2 combo |
PoE Budget | 375W shared |
Max Power Draw | 445W |
Cooling | 4 fans |
Lifecycle Status | Cisco support ended August 31, 2023 |
Replacement PID | C1300-24FP-4G |
A rollout with separate user and equipment subnets needs an interface plan before configuration begins. The switch supports 128 IP interfaces and includes an IPv4 DHCP server with multiple pools or scopes. Specify the intended interface assignments and address pools before issuing the purchase order.
A multi-site procurement using the same monitoring system can standardize polling against SNMP versions 1, 2c and 3. SNMPv3 includes user-based security for authenticated management access. Record the management protocol, credentials and monitoring requirements for each site in the deployment schedule attached to the purchase order.
A lab purchase for validating larger Ethernet frames needs the same frame-size settings as the intended network. The switch supports jumbo frames to 9216 bytes, allowing that setting to be checked during staging. Include the required frame size and connected-device test plan with the order.
10G uplinks to distribution
SG300-28MP-K9-NA limits each uplink to Gigabit Ethernet. The fixed interfaces cannot provide a native 10G connection or accept a removable higher-speed uplink card.
Continuous 30W on every powered port
SG300-28MP-K9-NA shares 375W across 24 powered ports, while 24 × 30W requires 720W. Reserving maximum power for every endpoint exceeds the available allocation.
Current manufacturer service coverage
SG300-28MP-K9-NA passed its last support date on August 31, 2023. Specify C1300-24FP-4G for the current successor rather than a legacy unit requiring Cisco service.
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| SG300-28MP-K9-NA |  SG300-52MP-K9-EU |  SRW2024P-K9 |  SRW2048-K9 |  SF300-48PP | |
|---|---|---|---|---|---|
| Depth | 350 mm | 350 mm | 257 mm | 257 mm | 10.0 inches |
| Ethernet Technology | Gigabit Ethernet | Gigabit Ethernet | Gigabit Ethernet | Gigabit Ethernet | 10/100 |
| Form Factor | Rack-Mount 1U | Rack-Mount 1U | Rack-Mount 1U | Rack-Mount 1U | Rack-mount |
| Height | 44.45 mm | 44.45 mm | 44.45 mm | 44.45 mm | 1.73 inches |
| Manufacturer Part Number | SG300-28MP-K9-NA | SG300-52MP-K9-EU | SRW2024P-K9 | SRW2048-K9 | SF300-48PP |
| SFP Ports | 2 x 1GbE (Combo, shared with RJ-45) | 2 x 1GbE (Combo, shared with RJ-45) | 2 x 1GbE (Combo, shared with RJ-45) | 2 x 1GbE (Combo, shared with RJ-45) | Combo |
| Switching Capacity | 56 Gbps | 104 Gbps | 56 Gbps | 104 Gbps | 64 Gbps |
| Weight | 5.26 kg | 5.32 kg | 4.11 kg | 3.9 kg | 16 lbs |
| Width | 440 mm | 440 mm | 440 mm | 440 mm | 17.5 inches |
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SG300-28MP-K9-NA identifies the Gigabit Max-PoE managed version of the Cisco 300 Series with 28 logical interfaces. SG300 denotes the Gigabit managed family, 28 is the interface count, and MP means Max-PoE. K9-NA completes this exact ordering identifier; the powered access-port count is 24.
SG300-28MP-K9-NA supports a web interface over HTTP or HTTPS, CLI access through the console, SSH or Telnet, and SNMP versions 1, 2c and 3. The browser interface includes configuration, monitoring and maintenance functions. HTTPS and SSH provide encrypted alternatives to their unencrypted management counterparts.
SG300-28MP-K9-NA provides a shared 375W PoE budget across 24 powered access ports, with a maximum of 30W on an individual port. The total allocation remains the controlling limit: reserving 30W for all 24 ports would require 720W, so endpoint requirements must be assessed together.
SG300-28MP-K9-NA has two dedicated Gigabit copper uplinks and two Gigabit copper/SFP combo uplinks alongside its 24 powered access ports. Each combo interface activates either its copper connection or its SFP connection, not both simultaneously. The uplinks are fixed and do not provide native 10G connectivity.
Cisco 300 Series Switches support static IPv4 routing between VLANs, with 512 static routes and 128 IP interfaces. SG300-28MP-K9-NA therefore supports routed subnet connections without requiring every inter-VLAN path to leave the switch. Routing configuration must use static paths rather than a dynamic routing protocol.
SG300-28MP hardware supports MGBSX1 for Gigabit multimode fiber connections to 300 m and MGBLX1 for Gigabit single-mode fiber connections to 10 km. MGBLH1 supports single-mode links to 40 km. Select the transceiver for the fiber and distance, remembering that each SFP shares its combo interface with copper.
SG300-28MP-K9-NA occupies 1U in a full-width rack installation and measures 440 mm wide, 44.45 mm high and 350 mm deep. The unit weighs 5.26 kg. Confirm rack depth and cable clearance before ordering, and allow airflow for the four-fan cooling arrangement.
SG300-28MP-K9-NA uses an internal universal AC supply accepting 100-240V at 50-60 Hz, rather than an external desktop adapter. Maximum consumption reaches 445W with PoE loading. Electrical sizing must account for chassis consumption and endpoint power together, not use the 375W PoE budget as the total draw.
SG300-28MP-K9-NA is discontinued, with Cisco end of sale on August 2, 2018, and the last date of support on August 31, 2023. Cisco service has ended. Software maintenance ended on August 2, 2019, so a remaining unit should not be purchased with an expectation of ongoing manufacturer maintenance.
SG300-28MP-K9-NA allocates 375W to PoE, while SG300-28PP-K9 allocates 180W; both power 24 PoE+ access ports. Both models are discontinued. The Max-PoE version suits higher aggregate endpoint loads in existing installations, while the lower-budget version suits legacy replacement requirements with smaller combined power allocations.
SG300-28MP-K9-NA provides 24 PoE+ access ports, whereas SG300-52P-K9 provides 48 PoE+ access ports. Both belong to the retired Cisco 300 Series. The smaller unit matches existing installations needing 24 powered endpoint connections; the larger unit addresses legacy replacement requirements needing twice that powered access-port density.
SG300-28MP-K9-NA has two Gigabit copper uplinks and two Gigabit copper/SFP combo uplinks, whereas C1300-24FP-4G has four dedicated Gigabit SFP uplinks. The discontinued SG300 model suits like-for-like legacy replacement. C1300-24FP-4G suits orders requiring the current successor with dedicated fiber connections rather than shared copper/SFP interfaces.
ORM Systems offers SG300-28MP-K9-NA new sealed or certified refurbished, with up to a 3-year extended warranty on new units and up to 1 year on refurbished units. Returns are accepted within 30 days for every condition; terms apply. Cisco's original limited lifetime hardware warranty and service ended August 31, 2023.
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