Replacement for A9951A: Drop-In Alternatives We Stock
Looking for a replacement for the A9951A (A9951A - HP 9000 rp4440-8 PA-8800 1GHz CPU 64MB DDR SDRAM Rack-Mountable 4U 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 A9951A
| SKU | A9951A |
|---|---|
| Product | A9951A - HP 9000 rp4440-8 PA-8800 1GHz CPU 64MB DDR SDRAM Rack-Mountable 4U Server |
| Current price | $419.43 |
| Stock status | In Stock |
| Detail page | View A9951A › |
Drop-in replacements for A9951A
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.
315580-001 - HP ProLiant 1600R Intel Pentium II 400MHz CPU 64MB SDRAM Tower Rack-Mountable Server System
SKU: 315580-001
Price: $1,524.21
315570-001 - HP ProLiant 1600 Intel 440BX Chipset Pentium II 400MHz CPU 64MB SDRAM Tower Rack-Mountable Server System
SKU: 315570-001
Price: $1,524.21
337054-001 - HP ProLiant DL360 G3 Intel Xeon 3.06GHz CPU 1GB DDR SDRAM ATI Rage XL 8MB 110/220V AC 325-Watts Power Supply Rack-Mountable Server System
SKU: 337054-001
Price: $265.26
283975-001 - HP ProLiant DL560 Intel Xeon MP 1.90 CPU 1GB DDR SDRAM 8 MB Graphics 2U Rack-Mountable Server System
SKU: 283975-001
Price: $473.68
346920-001 - HP Compaq ProLiant DL560 Intel Xeon MP 2.7GHz CPU 1GB DDR SDRAM 8MB Graphics 2U Rack-Mountable Server System
SKU: 346920-001
Price: $494.74
306488-001 - HP ProLiant ML530 G2 Intel Xeon 2.80GHz CPU 1GB DDR SDRAM RageXL 8MB 7U 600-Watts Power Supply Rack-Mountable Server System
SKU: 306488-001
Price: $1,757.89
339317-001 - HP ProLiant ML370 G3 Intel Xeon 3.06GHz CPU 1GB DDR SDRAM RageXL 8MB 110/220V AC 500-Watts Power Supply 5U Rack-Mountable Server System
SKU: 339317-001
Price: $1,823.16
345317-001 - HP ProLiant ML570 G2 Intel Xeon MP 2.20GHz CPU 1GB DDR SDRAM ATI Rage IIC 8 MB 110/220V AC Rack-Mountable Tower Server System
SKU: 345317-001
Price: $3,457.89
345319-001 - HP ProLiant ML570 G2 Intel Xeon MP 3GHz CPU 1GB DDR SDRAM ATI Rage IIC 8MB 110/220V AC Rack-Mountable Tower Server System
SKU: 345319-001
Price: $3,457.89
345318-001 - HP ProLiant ML570 G2 Intel Xeon MP 2.20GHz CPU 1GB DDR SDRAM ATI Rage IIC 8MB 7U Rack-Mountable Server System
SKU: 345318-001
Price: $3,457.89
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.