Replacement for 740860-B21: Drop-In Alternatives We Stock
Looking for a replacement for the 740860-B21 (740860-B21 - HP 4TB 5900RPM SATA 6Gb/s 3.5-inch Internal Hard Drive)? Pro Disk Network ships HP 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 740860-B21
| SKU | 740860-B21 |
|---|---|
| Product | 740860-B21 - HP 4TB 5900RPM SATA 6Gb/s 3.5-inch Internal Hard Drive |
| Current price | $344.33 |
| Stock status | In Stock |
| Detail page | View 740860-B21 › |
Drop-in replacements for 740860-B21
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.
815635-B21 - HP 4TB 5900RPM SATA 6Gb/s Non Hot-Pluggable 512e 3.5-inch Hard Drive
SKU: 815635-B21
Price: $354.07
740856-B21 - HP Terascale 4TB 5900RPM SATA 6Gb/s 64MB Cache 3.5-inch Hard Drive
SKU: 740856-B21
Price: $383.92
815661-001 - HP 4TB 5900RPM SATA 6GB/s non Hot-Plug 512e 3.5-inch Hard Drive
SKU: 815661-001
Price: $437.93
713850-B21 - HP 4TB 7200RPM SAS 6.0Gb/s 3.5-inch Internal Hard Drive Gen. 8
SKU: 713850-B21
Price: $331.58
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.