Replacement for WD40NPZZ: Drop-In Alternatives We Stock
Looking for a replacement for the WD40NPZZ (WD40NPZZ - Western Digital 4TB 5400RPM SATA 6Gb/s 2.5-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 WD40NPZZ
| SKU | WD40NPZZ |
|---|---|
| Product | WD40NPZZ - Western Digital 4TB 5400RPM SATA 6Gb/s 2.5-inch Hard Drive |
| Current price | $202.11 |
| Stock status | In Stock |
| Detail page | View WD40NPZZ › |
Drop-in replacements for WD40NPZZ
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.
WD40E31X - Western Digital Blue 4TB 5400RPM Multi-Level-Cell SATA 6Gb/s 64MB Cache 8GB NAND Solid State Drive 3.5-inch Hybrid Hard Drive
SKU: WD40E31X
Price: $1,004.46
WD40PURZ - Western Digital Purple 4TB 5400RPM SATA 6Gb/s 64MB Cache 3.5-inch Surveillance Hard Drive
SKU: WD40PURZ
Price: $221.05
WD40EFRX - Western Digital Red 4TB 5400RPM SATA 6Gb/s 64MB Cache 3.5-inch Hard Drive
SKU: WD40EFRX
Price: $254.74
WD40EFRX-68WT0N0 - Western Digital Red 4TB 5400RPM SATA 6Gb/s 64MB Cache 3.5-inch Hard Drive
SKU: WD40EFRX-68WT0N0
Price: $254.74
WD40EZRX - Western Digital Green 4TB 5400RPM SATA 6Gb/s 64MB Cache 3.5-inch Hard Drive
SKU: WD40EZRX
Price: $268.42
WD40EZAZ - Western Digital Blue PC Desktop 4TB 5400RPM SATA 6Gb/s 256MB Cache 3.5-inch Hard drive
SKU: WD40EZAZ
Price: $291.79
WD40PURX - Western Digital Purple 4TB 5400RPM SATA 6Gb/s 64MB Cache 3.5-inch Surveillance Hard Drive
SKU: WD40PURX
Price: $294.74
WD40EFZX - Western Digital Red Plus NAS 4TB 5400RPM SATA 6Gb/s 128MB Cache 3.5-inch Hard Drive
SKU: WD40EFZX
Price: $294.74
WD40EZRZ - Western Digital Blue 4TB 5400RPM SATA 6Gb/s 64MB Cache 3.5-inch Hard Drive
SKU: WD40EZRZ
Price: $296.30
WD40EFAX - Western Digital Red NAS 4TB 5400RPM SATA 6Gb/s 256MB Cache 3.5-inch Hard Drive
SKU: WD40EFAX
Price: $318.32
WD40EURX - Western Digital AV 4TB 5400RPM SATA 6Gb/s 64MB Cache 3.5-inch Hard Drive
SKU: WD40EURX
Price: $344.33
WDBH2D0040HNC-NRSN - Western Digital Desktop Mainstream 4TB 5400RPM SATA 6GB/s 64MB Cache 3.5-inch Hard Drive
SKU: WDBH2D0040HNC-NRSN
Price: $357.09
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.