Replacement for WS-X4008: Drop-In Alternatives We Stock
Looking for a replacement for the WS-X4008 (WS-X4008 - Cisco 400-Watts AC Power Supply for Catalyst 4000 Series)? 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-X4008
| SKU | WS-X4008 |
|---|---|
| Product | WS-X4008 - Cisco 400-Watts AC Power Supply for Catalyst 4000 Series |
| Current price | $182.37 |
| Stock status | In Stock |
| Detail page | View WS-X4008 › |
Drop-in replacements for WS-X4008
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-CAC-4000W-US - Cisco 4000-Watts Power Supply for Catalyst 6000 Series
SKU: WS-CAC-4000W-US
Price: $243.63
WS-CAC-4000W-INT - Cisco 4000-Watts AC Power Supply for Catalyst 6500 Series
SKU: WS-CAC-4000W-INT
Price: $365.47
WS-CAC-4000W - Cisco 4000-Watts AC Power Supply For Catalyst 6500 Series
SKU: WS-CAC-4000W
Price: $471.32
WS-P4603-2PSU - Cisco Catalyst 4000 Auxiliary Power Shelf For Catalyst 4006 Switch
SKU: WS-P4603-2PSU
Price: $619.67
341-0037-03 - Cisco PWR-C45-1000AC Catalyst 1000-Watts Power Supply For Catalyst 4500 Series
SKU: 341-0037-03
Price: $208.42
MEM-4000-16F - Cisco 16MB Kit (2 X 8MB) Flash Memory for Cisco 4000 Series
SKU: MEM-4000-16F
Price: $290.33
C3K-PWR-1150WAC-RF - Cisco 1150-Watts 110-220V AC Power Supply for Cisco Catalyst 3750-E PoE Series switch
SKU: C3K-PWR-1150WAC-RF
Price: $228.93
PWR-C1-715WAC-P - Cisco 715-Watts Hot-Pluggable Redundant Power Supply for Cisco Catalyst 9300 Series Switch
SKU: PWR-C1-715WAC-P
Price: $2,061.68
C9400-PWR-3200DC - Cisco 3200-Watts Hot-Swappable DC Power Supply for Cisco Catalyst 9400 Series Switches
SKU: C9400-PWR-3200DC
Price: $4,155.79
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.