Replacement for WDS400T2B0A: Drop-In Alternatives We Stock
Looking for a replacement for the WDS400T2B0A (WDS400T2B0A - Western Digital Blue 3D NAND 4TB Triple-Level Cell SATA 6Gb/s 2.5-inch Solid State 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 WDS400T2B0A
| SKU | WDS400T2B0A |
|---|---|
| Product | WDS400T2B0A - Western Digital Blue 3D NAND 4TB Triple-Level Cell SATA 6Gb/s 2.5-inch Solid State Drive |
| Current price | $831.42 |
| Stock status | In Stock |
| Detail page | View WDS400T2B0A › |
Drop-in replacements for WDS400T2B0A
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.
WDS500G2B0B - Western Digital Blue 3D NAND 500GB Triple-Level Cell SATA 6Gb/s M.2 2280 Solid State Drive
SKU: WDS500G2B0B
Price: $160.00
WDS250G2B0A - Western Digital Blue 3D NAND 250GB 7200RPM Triple-Level Cell SATA 6Gb/s 2.5-inch Solid State Drive
SKU: WDS250G2B0A
Price: $165.79
WDS500G2B0A - Western Digital Blue 3D NAND 500GB Triple-Level Cell SATA 6Gb/s 2.5-inch Solid State Drive
SKU: WDS500G2B0A
Price: $189.47
WDS100T2B0A - Western Digital Blue 3D NAND 1TB Triple-Level Cell SATA 6Gb/s 2.5-inch Solid State Drive
SKU: WDS100T2B0A
Price: $235.79
WDS100T2B0B - Western Digital Blue 3D NAND 1TB Triple-Level Cell SATA 6Gb/s M.2 2280 Solid State Drive
SKU: WDS100T2B0B
Price: $235.79
WDS100T2B0C - Western Digital Blue SN550 1TB Triple-Level Cell PCI Express 3.0 x4 NVMe 3D NAND M.2 2280 Solid State Drive
SKU: WDS100T2B0C
Price: $395.34
WDS200T2B0A - Western Digital Blue 3D NAND 2TB Triple-Level Cell SATA 6Gb/s 2.5-inch Solid State Drive
SKU: WDS200T2B0A
Price: $450.53
WDS200T2B0B - Western Digital Blue 3D NAND 2TB Triple-Level Cell SATA 6Gb/s M.2 2280 Solid State Drive
SKU: WDS200T2B0B
Price: $473.68
WD40E31XSP - Western Digital Blue SSHD 4TB 5400RPM Multi-Level-Cell SATA 6Gb/s 64MB Cache 8GB NAND 3.5-inch Hybrid Hard Drive
SKU: WD40E31XSP
Price: $421.21
WD8-102990304 - Western Digital Blue SSHD 4TB 5400RPM SATA 6Gb/s 64MB Cache 8GB NAND Multi-Level-Cell 3.5-inch Hybrid Hard Drive
SKU: WD8-102990304
Price: $421.47
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
WD40E31X-00HY4A0 - Western Digital Blue 4TB 5400RPM Multi-Level-Cell SATA 6Gb/s 64MB Cache 8GB NAND 3.5-inch Hybrid Hard Drive
SKU: WD40E31X-00HY4A0
Price: $1,004.46
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.