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ESW-520-48-K9
Cisco ESW-520-48-K9 ESW 500 48-Port Fast Ethernet Switch, 2x...
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ESW-520-48-K9 is a managed Layer 2 switch with 48 10/100 Ethernet access ports, two Gigabit copper uplinks, and two dedicated Gigabit SFP slots. The fixed-configuration, non-PoE model belongs to the ESW 500 family within Cisco Small Business Pro and uses a 1U rack-mount chassis. Its access connections serve computers, printers, and separately powered endpoints. The discontinued ESW-520-48P-K9 is the corresponding PoE-equipped sibling.
ESW-520-48-K9 price for new stock is is available on request. Get immediate quote. ESW-520-48-K9 refurb price is $504.00.
Request bulk order quote for ESW-520-48-K9 for additional pricing. Browse the full Cisco ESW 500 Switches series or explore all Cisco products.
17.6 Gbps switching capacity provides the switching fabric for the access and expansion connections. 13 Mpps forwarding performance applies to 64-byte packets. STP/RSTP/MSTP support loop control, while LACP supports aggregated links. ESW-520-48-K9 runs VxWorks and uses an embedded browser-based configuration utility or Cisco Configuration Assistant rather than a configuration CLI. SNMP supports remote monitoring; port mirroring provides a traffic-analysis connection.
Specify ESW-520-48-K9 in new sealed or certified refurbished condition, and identify the required accessories on the purchase order. Refurbished units are inspected and bench-tested for power-on, POST, clean boot, rated-speed port links, and optics recognition; firmware is verified and configuration is wiped to factory default. ORM provides up to a 3-year extended warranty on new units, up to 1 year on certified refurbished units, and 30-day returns on either condition; terms apply. Cisco coverage has ended; enterprise and volume orders can use accepted POs, government Net-30, and RMA with advance replacement across UK, EU, US, and MEA regional stock/RMA operations.
| Key Specs | Key Spec Values |
|---|---|
Operating System | VxWorks. |
Port Configuration | 48 x 10/100 / 2 x 1G copper / 2 x 1G SFP. |
Lifecycle Status | Retired / Cisco support ended. |
When replacing a failed unit in an installed ESW 500 network, match the complete ESW-520-48-K9 identifier rather than selecting by port count alone. Record the existing uplink media and endpoint power arrangements, then specify the required condition and included accessories on the purchase order.
When reproducing an existing small-business configuration in a lab, retain the VxWorks operating environment rather than assuming Cisco IOS command compatibility. Prepare the intended configuration workflow and acceptance checks before ordering, and identify the management workstation and required connection accessories on the purchase order.
Gigabit speeds at every endpoint
The access ports stop at 100 Mbps; Gigabit connectivity is confined to the expansion connections. A requirement for Gigabit desktop access exceeds this model's capability.
Switch supplied power for endpoints
The access ports do not deliver PoE. Phones, cameras, and access points requiring power through their Ethernet connection need a separate power arrangement.
CLI based configuration automation
The ESW 500 family does not provide a configuration CLI. Workflows requiring command-driven configuration cannot be carried over to its graphical configuration tools.
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| ESW-520-48-K9 |  ESW-520-8P-K9 |  ESW-540-24P-K9 |  ESW-520-24-K9 |  ESW-540-8P-K9 | |
|---|---|---|---|---|---|
| Depth | 375 mm | 170 mm | 375 mm | 375 mm | 170 mm |
| Ethernet Technology | Fast Ethernet | Fast Ethernet | Gigabit Ethernet | Fast Ethernet | Gigabit Ethernet |
| Form Factor | Rack-Mount 1U | Desktop | Rack-Mount 1U | Rack-Mount 1U | Desktop |
| Height | 44 mm | 44 mm | 44 mm | 44 mm | 44 mm |
| Manufacturer Part Number | ESW-520-48-K9 | ESW-520-8P-K9 | ESW-540-24P-K9 | ESW-520-24-K9 | ESW-540-8P-K9 |
| SFP Ports | 2 x 1GbE | 1 x 1GbE (Combo, shared with RJ-45) | 4 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 | 17.6 Gbps | 3.6 Gbps | 48 Gbps | 12.8 Gbps | 18 Gbps |
| Weight | 2.19 kg. | 1.02 kg | 2.6 kg | 2 kg. | 1.02 kg |
| Width | 440 mm | 220 mm | 440 mm | 440 mm | 220 mm |
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ESW-520-48-K9 identifies the ESW 500 family's non-PoE, 48-port 10/100 model with four Gigabit expansion connections. The 48 corresponds to the access-port count; the complete identifier distinguishes this unit from the PoE and Gigabit-access models.
ESW-520-48-K9 is configured through its HTTP/HTTPS browser utility or Cisco Configuration Assistant. SNMP applications provide remote monitoring. The ESW 500 family does not support configuration through a CLI, so command-based administration is not an available management path.
ESW-520-48-K9 belongs to the retired ESW 500 family, and Cisco support has ended. Treat an order as procurement of legacy hardware rather than a currently supported Cisco deployment, and establish the required seller-backed service arrangements before purchasing.
ORM Systems offers ESW-520-48-K9 new sealed or certified refurbished, with up to a 3-year extended warranty for new units and up to 1 year for refurbished units. Returns are available for 30 days in either condition; terms apply. Cisco's original nontransferable 5-year limited hardware warranty has ended.
No, ESW-520-48-K9 does not supply PoE to connected devices. Its Ethernet connections carry data, so any attached phone, camera, or access point must have an independent power arrangement if it requires electrical power to operate.
ESW-520-48-K9 has four fixed Gigabit expansion connections: two 10/100/1000BASE-T ports and two dedicated SFP slots. The fiber slots are separate from the copper uplinks rather than shared combo connections, allowing the selected media arrangement to use both types.
ESW-520-48P-K9 supplies PoE, whereas ESW-520-48-K9 does not. Both models are discontinued. The non-PoE model fits separately powered endpoints; the PoE model addresses endpoints needing switch-supplied power, subject to its shared power budget.
ESW-520-48-K9 provides 48 Fast Ethernet access ports, while ESW-520-24-K9 provides 24. Both models are discontinued. The higher-density model addresses more endpoint connections; the smaller model addresses a lower access-port requirement.
ESW-540-48-K9 supports Gigabit Ethernet access, whereas ESW-520-48-K9 provides 10/100 access. Both models are discontinued. Gigabit endpoint requirements distinguish the former; an existing Fast Ethernet installation is the relevant context for the latter.
Yes, the 24-port and 48-port ESW 500 models support the external RPS1000 redundant power supply. ESW-520-48-K9 does not provide a second internal supply bay; the external accessory is a separate purchase-order item.
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