Replacement for 721551-001: Drop-In Alternatives We Stock
Looking for a replacement for the 721551-001 (721551-001 - HP 3T SSD G2 IO Accelerator)? 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 721551-001
| SKU | 721551-001 |
|---|---|
| Product | 721551-001 - HP 3T SSD G2 IO Accelerator |
| Current price | $5,534.74 |
| Stock status | In Stock |
| Detail page | View 721551-001 › |
Drop-in replacements for 721551-001
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.
639188-001 - HP 320GB SSD PCI-Express x4 Mezzanine I/O Accelerator Card for BladeSystem C-Class Server
SKU: 639188-001
Price: $197.89
627196-001 - HP 640GB SSD PCI-Express x4 Mezzanine I/O Accelerator Card
SKU: 627196-001
Price: $496.84
507152-001 - HP 320GB Internal SSD PCI-Express x4 Mezzanine I/O Accelerator Card for HP BladeSystem c-Class Server
SKU: 507152-001
Price: $579.26
AJ878A - HP 320GB Internal SSD PCI-Express x4 Mezzanine I/O Accelerator Card for HP BladeSystem c-Class Server
SKU: AJ878A
Price: $397.89
AJ877A - HP 160GB Internal SSD PCI-Express x4 Mezzanine IO Accelerator Card for HP c-Class BladeSystem
SKU: AJ877A
Price: $969.24
AJ878B - HP 320GB Internal SSD PCI-E x4 Mezzanine I/O Accelerator Card for HP BladeSystem C Class Server
SKU: AJ878B
Price: $1,023.16
QK763A - HP 1.2TB SSD MLC PCI-Express x4 I/O Accelerator for ProLiant Blade System
SKU: QK763A
Price: $4,787.37
125425-001 - HP / Compaq Cache Accelerator Board for ProLiant 8000 / 8500
SKU: 125425-001
Price: $155.79
143887-001 - HP / Compaq Cache Accelerator Board for ProLiant 8000 / 8500
SKU: 143887-001
Price: $157.07
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.