Replacement for WD40NMZW: Drop-In Alternatives We Stock
Looking for a replacement for the WD40NMZW (Western WD40NMZW Western Digital WD40NMZW 4TB 5400RPM USB 3.0 2.5-Inch Hard Drive. In Stock)? 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 WD40NMZW
| SKU | WD40NMZW |
|---|---|
| Product | Western WD40NMZW Western Digital WD40NMZW 4TB 5400RPM USB 3.0 2.5-Inch Hard Drive. In Stock |
| Stock status | In Stock |
| Detail page | View WD40NMZW › |
Drop-in replacements for WD40NMZW
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.
WD40NMZW-11GX6S1 - Western Digital 4TB 5400RPM USB 3 2.5-inch Hard Drive
SKU: WD40NMZW-11GX6S1
Price: $712.64
WDBFNJ0000NNC-WASN - Western Digital WDBFNJ0000NNC-WASN 2-port USB Card - 2 x Type A USB 3.0 USB - Plug-in Card
SKU: WDBFNJ0000NNC-WASN
Price: $139.66
Western WUS4C6464DSP3X3 Western Digital WUS4C6464DSP3X3 Ultrastar DC SN840 6.4TB Triple-Level Cell PCI Express 3.1 x4 NVMe ISE U.2 2.5-Inch Solid State Drive. In Stock
SKU: WUS4C6464DSP3X3
Price: $3,257.89
WDBC3C0010BSL-WESN - Western Digital My Passport Ultra 1TB USB C and USB 3.0 2.5-inch External Hard Drive
SKU: WDBC3C0010BSL-WESN
Price: $223.16
WDBPKJ0040BBL-WESN - Western Digital My Passport 4TB USB 3.0 2.5-inch External Hard Drive
SKU: WDBPKJ0040BBL-WESN
Price: $292.63
WDBPKJ0040BBK-WESN - Western Digital My Passport 4TB USB 3.0 2.5-inch External Hard Drive
SKU: WDBPKJ0040BBK-WESN
Price: $296.84
WDBA3A0040BBK-WESN - Western Digital Black P10 Game Drive 4TB USB 3.2 Gen1 2.5-inch External Hard Drive
SKU: WDBA3A0040BBK-WESN
Price: $300.00
WDBBGB0040HBK-NESN - Western Digital My Book 4TB USB 3.0 3.5-inch External Hard Drive
SKU: WDBBGB0040HBK-NESN
Price: $315.79
WDBA2F0040BBL-WESN - Western Digital My Passport 4TB USB 3.0 External Hard Drive For Mac
SKU: WDBA2F0040BBL-WESN
Price: $300.00
Western WD33PURZ Western Digital WD33PURZ Purple Surveillance 3TB SATA 6Gb/s 256MB Cache 3.5-inch Internal Hard Drive. In Stock
SKU: WD33PURZ
Price: $210.53
Western WD80EFPX Western Digital WD80EFPX 8TB 6Gb/s SATA 256MB Cache 3.5-Inch Hard Drive. In Stock
SKU: WD80EFPX
Price: $447.37
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.