Alternative to WD40EMRX: Better-Value Equivalents in Stock
Comparing the WD40EMRX (WD40EMRX - Western Digital 4TB 5400PRM SATA 6Gb/s 3.5-inch Hard Drive) against alternatives? Pro Disk Network stocks 12 similar Western Digital parts that offer comparable performance at different price points. Each option below is in-stock, US-warehoused, and tested-and-certified before ship. Bulk pricing is available on quantities of 5+; B2B procurement can use Net 30 with PO.
About the WD40EMRX
| SKU | WD40EMRX |
|---|---|
| Product | WD40EMRX - Western Digital 4TB 5400PRM SATA 6Gb/s 3.5-inch Hard Drive |
| Current price | $259.50 |
| Stock status | In Stock |
| Detail page | View WD40EMRX › |
Alternatives to WD40EMRX
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.
Western WD4005FFBX Western Digital WD4005FFBX Red Pro 4TB 7200RPM SATA 6Gb/s 256MB Cache 3.5-Inch Hard Drive
SKU: WD4005FFBX
Price: $284.21
Western WD4006FZBX Western Digital WD4006FZBX Black 4TB 7200RPM 6Gb/s SATA 256MB Cache 3.5-Inch Hard Drive
SKU: WD4006FZBX
Price: $366.32
Western WDS400T3B0A-00C7K0 Western Digital WDS400T3B0A-00C7K0 4TB SATA 6Gb/s 2.5-Inch Solid State Drive
SKU: WDS400T3B0A-00C7K0
Price: $1,854.74
Western WDS400T2R0A-68CKB0 Western Digital WDS400T2R0A-68CKB0 Red SA500 4TB SATA 6Gb/s 2.5-inch NAS Internal Solid State Drive
SKU: WDS400T2R0A-68CKB0
Price: $1,984.21
Western WDS400T3B0A Western Digital WDS400T3B0A Blue SA510 4TB Triple-Level Cell 6Gb/s SATA SFF 2.5-Inch Solid State Drive
SKU: WDS400T3B0A
Price: $2,155.79
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
WD42PURZ - Western Digital Purple 4TB CMR SATA 6Gb/s 256MB Cache 3.5-inch Surveillance Hard Drive
SKU: WD42PURZ
Price: $150.32
WD4001FFSX - Western Digital Red Pro 4TB 7200RPM SATA 6Gb/s 64MB Cache 3.5-inch Hard Drive
SKU: WD4001FFSX
Price: $210.53
WD40PURZ - Western Digital Purple 4TB 5400RPM SATA 6Gb/s 64MB Cache 3.5-inch Surveillance Hard Drive
SKU: WD40PURZ
Price: $221.05
WD4003FZEX - Western Digital Black 4TB 7200RPM SATA 6Gb/s 64MB Cache 3.5-inch Hard Drive
SKU: WD4003FZEX
Price: $233.68
How we pick alternatives
Every recommendation above was selected using these criteria:
- Spec parity — capacity, speed, port count, and form factor matched within a 10% tolerance
- Price spread — alternatives shown across the price range, so you can pick on budget
- Brand mix — both OEM-equivalent and trusted aftermarket, all certified
- Reliability data — preferred parts have failure rates below 1% in our 18-month return tracking
- In stock today — shipping today, not 4-6 weeks from now
Want a side-by-side spec comparison?
We can prepare a written comparison covering throughput, power draw, form factor and validated compatibility. Email sales@prodisknetwork.com or call +1 (407) 205-8454 — most quotes ship within 4 business hours.