Replacement for 721458-B21: Drop-In Alternatives We Stock
Looking for a replacement for the 721458-B21 (721458-B21 - HP 3TB G2 FH/HL PCI Express ioDrive2 IO Accelerator for ProLiant Servers)? 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 721458-B21
| SKU | 721458-B21 |
|---|---|
| Product | 721458-B21 - HP 3TB G2 FH/HL PCI Express ioDrive2 IO Accelerator for ProLiant Servers |
| Current price | $5,534.74 |
| Stock status | In Stock |
| Detail page | View 721458-B21 › |
Drop-in replacements for 721458-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.
763834-B21 - HP 1.3TB HH/HL Value Endurance PCI Express Workload Accelerator Card
SKU: 763834-B21
Price: $316.84
SSDPEDME800G4P - HP 800GB NVMe Mixed Use HH/HL PCI Express Workload Accelerator for ProLiant Server
SKU: SSDPEDME800G4P
Price: $321.05
803200-B21 - HP 800GB Nvme Mixed Use Hh/hl PCI-Express Workload Accelerator for ProLiant Server
SKU: 803200-B21
Price: $363.16
804568-001 - HP 800GB NVMe Mixed Use HH/HL PCI Express Workload Accelerator for ProLiant Server
SKU: 804568-001
Price: $363.16
803202-B21 - HP 1.6TB NVME Mixed USE HH / HL PCI Express Workload Accelerator for ProLiant Server
SKU: 803202-B21
Price: $478.95
804570-001 - HP 2TB PCI Express (NVME) Solid State Drive Accelerator Card for ProLiant Server
SKU: 804570-001
Price: $626.32
803204-B21 - HP 2TB NVME Mixed USE HH / HL PCI Express Workload Accelerator for ProLiant Server
SKU: 803204-B21
Price: $694.74
803195-B21 - HP 800GB NVME Write Intensive HH / HL PCI Express Workload Accelerator for ProLiant Server
SKU: 803195-B21
Price: $1,347.37
803197-B21 - HP 1.6TB NVME Write Intensive HH / HL PCI Express Workload Accelerator for ProLiant Server
SKU: 803197-B21
Price: $1,866.58
QK763A - HP 1.2TB SSD MLC PCI-Express x4 I/O Accelerator for ProLiant Blade System
SKU: QK763A
Price: $4,787.37
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.