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ESW-520-24P-K9
Cisco ESW-520-24P-K9 ESW 500 24-Port Fast Ethernet PoE Switc...
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ESW-520-24P-K9 is a managed Layer 2 switch with 24 Fast Ethernet PoE access ports and four Gigabit uplink connections. Two uplinks are dedicated copper ports; the other two offer shared copper or SFP connectivity, with one interface active per combo connection. The full-width rack chassis belongs to the Cisco ESW 500 family, positioned for small business data, voice, video, and wireless networks. IP phones, compatible cameras, and wireless access points can receive power through their Ethernet connections. This is a Fast Ethernet access model: Gigabit connectivity is concentrated in the uplinks rather than distributed across the endpoint ports.
ESW-520-24P-K9 price for new stock is is available on request. Get immediate quote. ESW-520-24P-K9 refurb price is $239.35.
Request bulk order quote for ESW-520-24P-K9 for additional pricing. Browse the full Cisco ESW 500 Switches series or explore all Cisco products.
12.8 Gbps switching capacity provides the switching fabric for connected access and uplink traffic. 9.5 Mpps forwarding capacity applies to 64-byte packets. 180W of shared PoE capacity requires endpoint power allocation rather than assuming every powered port can operate at its individual maximum simultaneously. STP, RSTP, and MSTP support loop prevention, while LACP provides link aggregation. Four hardware queues support traffic prioritization using priority queuing or weighted round-robin scheduling. ESW-520-24P-K9 supports the embedded HTTP/HTTPS configuration utility, Cisco Configuration Assistant, and SNMP versions 1, 2c, and 3. Access control lists can filter traffic using Layer 2, Layer 3, or Layer 4 parameters; those filtering capabilities do not make the switch a routed-access device. IGMP snooping restricts multicast delivery to requesting receivers.
ESW-520-24P-K9 is offered new sealed or certified refurbished; specify the required condition, quantity, and included accessories on the purchase order. Certified refurbished units are inspected and bench-tested for power-on, POST, clean boot, rated-speed links on every port, PoE output under load on every powered port, optics bay recognition, PSU status, and fan status; firmware is verified and configuration wiped to factory default. ORM warranty coverage is up to a three-year extended term for new units or up to one year for certified refurbished units, with 30-day returns on every condition, terms apply. Enterprise and volume orders can use accepted POs, government Net-30 terms, and RMA with advance replacement.
| Key Specs | Key Spec Values |
|---|---|
Port Configuration | 24 Fast Ethernet PoE / four Gigabit uplinks, two combo |
PoE Budget | 180W shared |
Cooling | 2 fans |
When replacing a switch serving lower-draw phones or access points, endpoint demand determines how many powered connections can operate together. A 7.5W allocation across the powered access ports is one supported loading example. Collect each endpoint's maximum demand and specify the power allocation before issuing the purchase order.
When preparing a replacement for an existing installation, firmware handling and configuration persistence need separate staging checks. The ESW 500 supports dual firmware images, and configuration changes require an explicit save operation. Specify the required image and preserve the intended startup configuration before accepting the staged unit.
Gigabit speeds on every access port
The 24 endpoint ports support 10/100 Mbps rather than Gigabit Ethernet. Gigabit uplinks do not increase the negotiated speed available to an attached access-port device.
More than 15.4W per powered endpoint
Each powered access port is limited to 15.4W, subject to the shared power budget. Endpoints requiring greater per-port delivery exceed this model's power capability.
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| ESW-520-24P-K9 |  ESW-540-24P-K9 |  ESW-540-8P-K9 |  ESW-520-24-K9 |  ESW-520-8P-K9 | |
|---|---|---|---|---|---|
| Depth | 375 mm | 375 mm | 170 mm | 375 mm | 170 mm |
| Ethernet Technology | Fast Ethernet | Gigabit Ethernet | Gigabit Ethernet | Fast Ethernet | Fast Ethernet |
| Form Factor | Rack-Mount 1U | Rack-Mount 1U | Desktop | Rack-Mount 1U | Desktop |
| Height | 44 mm | 44 mm | 44 mm | 44 mm | 44 mm |
| Manufacturer Part Number | ESW-520-24P-K9 | ESW-540-24P-K9 | ESW-540-8P-K9 | ESW-520-24-K9 | ESW-520-8P-K9 |
| SFP Ports | 2 x 1GbE (Combo, shared with RJ-45) | 4 x 1GbE (Combo, shared with RJ-45) | 1 x 1GbE (Combo, shared with RJ-45) | 2 x 1GbE (Combo, shared with RJ-45) | 1 x 1GbE (Combo, shared with RJ-45) |
| Switching Capacity | 12.8 Gbps | 48 Gbps | 18 Gbps | 12.8 Gbps | 3.6 Gbps |
| Weight | 2.23 kg | 2.6 kg | 1.02 kg | 2 kg. | 1.02 kg |
| Width | 440 mm | 440 mm | 220 mm | 440 mm | 220 mm |
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ESW-520-24P-K9 identifies the ESW 500 model with 24 10/100 PoE access ports and four Gigabit expansion connections. The 24P configuration distinguishes the powered 24-port model. Two expansion connections are dedicated copper interfaces, while two use shared copper/SFP interfaces with one medium active at a time.
ESW-520-24P-K9 is managed through its embedded HTTP/HTTPS configuration utility, Cisco Configuration Assistant, and SNMP versions 1, 2c, and 3. The browser utility provides configuration, dashboard, maintenance, and monitoring functions. Cisco Configuration Assistant handles device configuration and system management, while SNMP supports monitoring and traps.
ESW-520-24P-K9 belongs to the end-of-sale ESW 500 family. A sealed unit's condition does not establish current manufacturer availability or support entitlement. The exact last date of support and a current replacement could not be verified, so neither a dated support commitment nor a successor is represented here.
ORM Systems offers ESW-520-24P-K9 new sealed or certified refurbished, with up to a three-year extended warranty for new units or up to one year for refurbished units. Both conditions include 30-day returns, terms apply. Cisco's original enhanced five-year limited hardware warranty is separate; remaining Cisco coverage requires confirmation.
ESW-520-24P-K9 provides a shared 180W PoE budget, with a maximum of 15.4W on an individual powered access port. All powered endpoints draw from that common allocation. Port availability therefore does not guarantee maximum power on every connection simultaneously; endpoint demand must fit within the total budget.
ESW-520-24P-K9 can use four Gigabit uplink connections simultaneously: two dedicated copper connections and two combo connections. Each combo connection accepts copper or SFP connectivity, but not both at once. Selecting fiber on a combo connection does not create an additional independent uplink beside its associated copper interface.
The ESW 500 configuration represented by this model provides Layer 2 switching rather than Layer 3 routing. Traffic filtering can inspect Layer 3 and Layer 4 parameters, but that is distinct from forwarding traffic between IP subnets. Inter-subnet connectivity therefore requires an appropriate upstream routing device.
ESW-520-24P-K9 has a full-width 1U chassis measuring 440 mm wide, 375 mm deep, and 44 mm high. The unit weighs 2.23 kg and uses two fans. Confirm the mounting hardware supplied with the selected condition and allow installation space for cabling and ventilation.
The ESW 500 supports external power redundancy through a connection to a redundant power supply, rather than a second internal supply bay on this model. The compatible external unit is RPS1000. That external arrangement must not be confused with a chassis shipping with two redundant internal power modules.
ESW-520-24P-K9 supplies PoE on its 24 Fast Ethernet access ports, whereas ESW-520-24-K9 provides non-PoE access ports. Both models belong to the discontinued ESW 500 family. The powered version addresses compatible Ethernet-powered endpoints; the non-PoE version serves devices that receive their operating power separately.
ESW-520-24P-K9 has 24 10/100 PoE access ports, whereas ESW-540-24P-K9 has 24 10/100/1000 PoE access ports. Both are discontinued ESW 500 models. The former matches Fast Ethernet endpoint connections; the latter addresses installations requiring Gigabit Ethernet negotiation on the powered access connections themselves.
ESW-520-24P-K9 provides 24 Fast Ethernet PoE access ports, while ESW-520-48P-K9 provides 48. Both models are discontinued members of the ESW 500 family. The smaller configuration fits an existing 24-connection requirement; the higher-density configuration accommodates more endpoint connections within a single switch chassis.
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