Replacement for A1421-66540: Drop-In Alternatives We Stock
Looking for a replacement for the A1421-66540 (A1421-66540 - HP Circuit Card Assembly for 9000/755)? 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 A1421-66540
| SKU | A1421-66540 |
|---|---|
| Product | A1421-66540 - HP Circuit Card Assembly for 9000/755 |
| Current price | $317.80 |
| Stock status | In Stock |
| Detail page | View A1421-66540 › |
Drop-in replacements for A1421-66540
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.
RG5-5646 - HP Left Door Assembly Includes Face-up Delivery Assembly for HP LaserJet 9000 / 9000 Multi Function Printer
SKU: RG5-5646
Price: $308.95
RG5-5646-000CN - HP Left Door Assembly Includes Face-up Delivery Assembly for HP LaserJet 9000 / 9000 Multi Function Printer
SKU: RG5-5646-000CN
Price: $308.95
RG5-5646-030CN - HP Left Door Assembly Includes Face-up Delivery Assembly for HP LaserJet 9000 / 9000 Multi Function Printer
SKU: RG5-5646-030CN
Price: $308.95
RG5-5646-050CN - HP Left Door Assembly Includes Face-up Delivery Assembly for HP LaserJet 9000 / 9000 Multi Function Printer
SKU: RG5-5646-050CN
Price: $308.95
RG5-5646-070CN - HP Left Door Assembly Includes Face-up Delivery Assembly for HP LaserJet 9000 / 9000 Multi Function Printer
SKU: RG5-5646-070CN
Price: $308.95
807497-001 - HP Printed Circuit Assembly with Envy Audio Board for Envy 24-N009 All-in-One
SKU: 807497-001
Price: $87.21
RM1-1979 - HP Toner Contact Circuit Assembly for Color LaserJet 2605 Series
SKU: RM1-1979
Price: $143.39
RM1-1979-000CN - HP Toner Contact Circuit Assembly for Color LaserJet 2605 Series
SKU: RM1-1979-000CN
Price: $143.39
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.