Replacement for 507750-B21: Drop-In Alternatives We Stock
Looking for a replacement for the 507750-B21 (507750-B21 HP 500GB 7200RPM SATA 3Gb/s Hot-Swappable 2.5-inch Hard Drive for ProLiant BL20p Server)? 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 507750-B21
| SKU | 507750-B21 |
|---|---|
| Product | 507750-B21 HP 500GB 7200RPM SATA 3Gb/s Hot-Swappable 2.5-inch Hard Drive for ProLiant BL20p Server |
| Current price | $71.58 |
| Stock status | In Stock |
| Detail page | View 507750-B21 › |
Drop-in replacements for 507750-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.
507750-S21 - HP 500GB 7200RPM SATA Midline 2.5-inch Hard Drive with Tray
SKU: 507750-S21
Price: $182.37
588599-002 HP 500GB 7200RPM SATA 3GB/s 3.5-inch Hot-Swappable Hard Drive
SKU: 588599-002
Price: $166.32
508035-001 - HP 500GB 7200RPM SATA 3Gb/s Hot-Swappable 2.5-inch Hard Drive for ProLiant BL20p Server
SKU: 508035-001
Price: $170.53
5188-2517 - HP 500GB 7200RPM SATA 3GB/s 3.5-inch Hot Swappable Hard Drive
SKU: 5188-2517
Price: $170.53
458928-B21 - HP 500GB 7200RPM SATA 3Gb/s Hot-Swappable 3.5-inch Hard Drive
SKU: 458928-B21
Price: $170.53
458928R-B21 - HP 500GB 7200RPM SATA 3Gb/s Hot-Swappable 3.5-inch Hard Drive
SKU: 458928R-B21
Price: $226.08
657753-005 - HP 500GB 7200RPM 3.5-inch SATA 6Gbps Hot Swappable Hard Drive
SKU: 657753-005
Price: $244.63
397377-017 - HP 750GB 7200RPM SATA 3Gb/s Hot-Swappable 3.5-inch Midline Hard Drive
SKU: 397377-017
Price: $155.79
595171-001 - HP 250GB 7200RPM SATA 3GB/s 3.5-inch Hot Swappable Hard Drive
SKU: 595171-001
Price: $157.00
AJ740AB - HP 1TB 7200RPM SATA 3Gb/s 3.5-inch Hot Swappable Hard Drive for MSA2 1040 SAN Storage Array
SKU: AJ740AB
Price: $164.12
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.