Replacement for WS-C4003-S1-82: Drop-In Alternatives We Stock
Looking for a replacement for the WS-C4003-S1-82 (WS-C4003-S1-82 - Cisco Catalyst 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-C4003-S1-82
| SKU | WS-C4003-S1-82 |
|---|---|
| Product | WS-C4003-S1-82 - Cisco Catalyst Network Switch Chassis |
| Stock status | In Stock |
| Detail page | View WS-C4003-S1-82 › |
Drop-in replacements for WS-C4003-S1-82
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.
34-0971-02 - Cisco 82.5-Watts AC Power Supply for Catalyst 3508 / 3548 Series
SKU: 34-0971-02
Price: $131.38
73-2822-05 - Cisco Catalyst 5000 24-Port 10 / 100 Ethernet Switching Module
SKU: 73-2822-05
Price: $684.95
C6840-X-750W-DC - Cisco Catalyst 6840-X Power Supply DC-750W -40 V DC, -72 V DC for C6816 C6824 C6840
SKU: C6840-X-750W-DC
Price: $1,821.47
39Y9282 - IBM CISCO SystemS 10 -Port Fibre Channel Switch Module for IBM BladeCenter - Switch - 7 Ports - 4GB Fibre Channel 3 X SFP (EMPTY)
SKU: 39Y9282
Price: $233.68
MEM2821-256D - Cisco 256MB DDR DIMM Memory Module for Cisco 2821/2851 Routers
SKU: MEM2821-256D
Price: $133.76
PWR-2821-51-AC-IP - Cisco PoE Power Supply for Cisco 2821 / 2851 Routers
SKU: PWR-2821-51-AC-IP
Price: $400.45
10-1821-01 - Cisco 2Gb/s Multi-Mode Fiber 300m 850nm Duplex LC Connector SFP Transceiver Module
SKU: 10-1821-01
Price: $99.58
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.