Replacement for 451286-B21: Drop-In Alternatives We Stock
Looking for a replacement for the 451286-B21 (451286-B21 - HP PCI-Express Riser Kit for ProLiant DL185 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 451286-B21
| SKU | 451286-B21 |
|---|---|
| Product | 451286-B21 - HP PCI-Express Riser Kit for ProLiant DL185 Server |
| Current price | $131.58 |
| Stock status | In Stock |
| Detail page | View 451286-B21 › |
Drop-in replacements for 451286-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.
777282-001 - HP PCI Riser Cage Assembly includes Metal Cage Assembly with 2-Slot Primary Optional PCI Riser Board for ProLiant DL388 Gen9 Server
SKU: 777282-001
Price: $212.63
728537-001 - HP Slot 2/5 PCI-Express X16 Slot 3/6 PCI-Express X8 Riser Board for ProLiant DL380p Gen8 Server
SKU: 728537-001
Price: $189.47
500580-B21 - HP PCI Express Riser card 2 x PCI Express x4 for HP ProLiant DL385 G5p Server
SKU: 500580-B21
Price: $282.20
497145-B21 - HP 2-Slot PCI-Express x8 Riser Card Kit for ProLiant DL180 G6 Server
SKU: 497145-B21
Price: $71.58
764642-B21 - HP Low Profile PCI Express Riser Kit for ProLiant DL360 G9 Server
SKU: 764642-B21
Price: $96.84
496057-001 - HP 3-Slot PCI-Express Riser Kit for ProLiant Dl380 G6 Server
SKU: 496057-001
Price: $170.53
500579-B21 - HP 3-Slot PCI-Express Riser Kit for ProLiant DL380 G6 Server
SKU: 500579-B21
Price: $170.53
497143-B21 - HP 1-Slot PCI Express x16 Riser Kit for ProLiant DL180 G6 Server Series
SKU: 497143-B21
Price: $189.47
577668-B21 - HP 3 PCI-Express X8 Full Height Riser Kit for ProLiant DL180 G6 Server
SKU: 577668-B21
Price: $205.26
875061-001 - HP PCI-Express x16 Tertiary Riser Kit for ProLiant DL380 G10 Server
SKU: 875061-001
Price: $642.43
622219-001 - HP 3-Slot PCI-Express Riser Kit for ProLiant DL380 / 385 G8
SKU: 622219-001
Price: $71.58
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.