Replacement for A1991-66001: Drop-In Alternatives We Stock
Looking for a replacement for the A1991-66001 (A1991-66001 - HP System Board (Motherboard) with CPU for Apollo 710 Workstation)? 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 A1991-66001
| SKU | A1991-66001 |
|---|---|
| Product | A1991-66001 - HP System Board (Motherboard) with CPU for Apollo 710 Workstation |
| Current price | $291.79 |
| Stock status | In Stock |
| Detail page | View A1991-66001 › |
Drop-in replacements for A1991-66001
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.
HPE A4308-66001 HP A4308-66001 1 x Port 10/100Base-TX 100Mb/s EISA Adapter
SKU: A4308-66001
Price: $173.68
842587-001 - HP System Board (Motherboard) for ProLiant XL170R Gen9 Apollo 2000 Server System
SKU: 842587-001
Price: $317.89
782432-003 - HP System Board (Motherboard) for Apollo 4200 Gen9 Server System
SKU: 782432-003
Price: $347.37
A1421-66501 - HP Main (vsc) Backplane Board for Apollo 9000 Series 400 Workstation
SKU: A1421-66501
Price: $283.34
809943-001 - HP System Board (Motherboard) for Apollo 4200 Gen9 Server
SKU: 809943-001
Price: $2,209.05
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.