Replacement for WS-C6503-E: Drop-In Alternatives We Stock
Looking for a replacement for the WS-C6503-E (WS-C6503-E - Cisco Catalyst 6503 Network Switch Chassis)? Pro Disk Network ships Cisco drop-in replacements and equivalent modern parts from US inventory. Every alternate below is in-stock today with same-day shipping for orders placed before 2pm ET. If your unit is still under warranty, contact our engineering team — we offer cross-shipping for B2B customers on Net 30 terms.
About the WS-C6503-E
| SKU | WS-C6503-E |
|---|---|
| Product | WS-C6503-E - Cisco Catalyst 6503 Network Switch Chassis |
| Stock status | In Stock |
| Detail page | View WS-C6503-E › |
Drop-in replacements for WS-C6503-E
Each part below is currently in our US warehouse, ships same-day for orders before 2pm ET, and includes our 90-day warranty. SKUs link to the full product page with photos, datasheets and B2B quote form.
WS-C6503E-S32-GE - Cisco Catalyst 6503-E Security Switch Chassis 8X SFP Desktop
SKU: WS-C6503E-S32-GE
Price: $6,899.66
Power Cisco entry module ( plug-in module ) - refurbished for Cisco 7603; Catalyst 6503
SKU: PEM-20A-AC--RF
Price: $120.39
Cisco Services SPA Carrier 400 - Expansion module - for Cisco 7603, 7604, 7606, 7609, 7613; Catalyst 6503
SKU: 7600-SSC-400
Price: $232.82
PWR-1400-AC - Cisco Power Supply Hot-Plug-in module AC 100-240V 1400-Watts For 7603 / 7603s, Catalyst 6503 / 6503e
SKU: PWR-1400-AC
Price: $291.79
47-13034-02 - Cisco 950-Watts AC Power Supply For Catalyst 6503 / 7603
SKU: 47-13034-02
Price: $417.54
WS-X6848-TX-2TXL - Cisco Catalyst 6503-E Series 48-Port Gigabit Copper Ethernet Module
SKU: WS-X6848-TX-2TXL
Price: $1,666.89
WS-X4596 - Cisco Catalyst 4506 Fan Tray Catalyst 4500 Non-E-Series Chassis
SKU: WS-X4596
Price: $97.14
WS-C4503-E - Cisco Catalyst 4503-E 3-Slot Rack-mountable Network Switch Chassis
SKU: WS-C4503-E
Price: $1,777.26
WS-C6509-E-FAN - Cisco 9-Slot Chassis Fan Tray for Catalyst 6509-E Series Switch
SKU: WS-C6509-E-FAN
Price: $118.12
WS-C6500-E - Cisco Catalyst 6500 Series 9-Slot 14U Rack-Mountable Switch Fabric Module Chassis
SKU: WS-C6500-E
Price: $547.37
How we pick replacements
Every recommendation above was selected using these criteria:
- Drop-in compatibility — same form factor (2.5"/3.5", PCIe slot, SFP port, etc.), so it fits the original chassis without modification
- Equivalent or better performance — matched on RPM/IOPS/speed/throughput, never downgraded
- Same-brand-preferred — we list the OEM-equivalent first when available, then trusted aftermarket
- Warranty coverage — 90-day Pro Disk warranty on every part, with 1-year option for B2B
- In stock today — never recommend a part that is on backorder
Need help confirming compatibility?
Our engineers validate every replacement against your specific server, switch, or chassis model before shipment. Email sales@prodisknetwork.com with your platform model (e.g., Dell PowerEdge R740, HP DL380 Gen10, Cisco Catalyst 9300) and we will confirm the exact part number that drops into your hardware.