Replacement for WD400EB: Drop-In Alternatives We Stock
Looking for a replacement for the WD400EB (WD400EB - Western Digital Protege 40GB 5400RPM ATA-100 2MB Cache 3.5-inch Hard Drive)? Pro Disk Network ships Western Digital 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 WD400EB
| SKU | WD400EB |
|---|---|
| Product | WD400EB - Western Digital Protege 40GB 5400RPM ATA-100 2MB Cache 3.5-inch Hard Drive |
| Current price | $121.26 |
| Stock status | In Stock |
| Detail page | View WD400EB › |
Drop-in replacements for WD400EB
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.
WD400EB-11JUF0 - Western Digital Protege 40GB 5400RPM ATA-100 2MB Cache 3.5-inch Hard Drive
SKU: WD400EB-11JUF0
Price: $143.39
WD400EB-00JUF0 - Western Digital Protege 40GB 5400RPM ATA-100 2MB Cache 3.5-inch Hard Drive
SKU: WD400EB-00JUF0
Price: $189.47
WD400EB-71CPF0 - Western Digital Protege 40GB 5400RPM ATA-100 2MB Cache 3.5-inch Hard Drive
SKU: WD400EB-71CPF0
Price: $204.38
WD400EB-00DJF0 - Western Digital Protege 40GB 5400RPM ATA-100 2MB Cache 3.5-inch Hard Drive
SKU: WD400EB-00DJF0
Price: $204.38
WD400EB-75CLB0 - Western Digital Protege 40GB 5400RPM ATA-100 2MB Cache 3.5-inch Hard Drive
SKU: WD400EB-75CLB0
Price: $204.38
WD400EB-75AUA1 - Western Digital Protege 40GB 5400RPM ATA-100 2MB Cache 3.5-inch Hard Drive
SKU: WD400EB-75AUA1
Price: $204.38
WD400EB-11JEF0 - Western Digital Protege 40GB 5400RPM ATA-100 2MB Cache 3.5-inch Hard Drive
SKU: WD400EB-11JEF0
Price: $205.26
WD400EB-32CPF0 - Western Digital Protege 40GB 5400RPM ATA-100 2MB Cache 3.5-inch Hard Drive
SKU: WD400EB-32CPF0
Price: $248.39
WD400EB-11CPF0 - Western Digital Protege 40GB 5400RPM ATA-100 2MB Cache 3.5-inch Hard Drive
SKU: WD400EB-11CPF0
Price: $344.33
WD400BEB-11CPF0 - Western Digital Protege 40GB 5400RPM ATA-100 2MB Cache 3.5-inch Hard Drive
SKU: WD400BEB-11CPF0
Price: $405.26
WD400EB-75CPF0 - Western Digital Protege 40GB 5400RPM ATA-100 2MB Cache 3.5-inch Hard Drive
SKU: WD400EB-75CPF0
Price: $405.26
WD400EB-00JEF0 - Western Digital Protege 40GB 5400RPM ATA-100 2MB Cache 3.5-inch Hard Drive
SKU: WD400EB-00JEF0
Price: $405.26
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.