Replacement for 631671-B21: Drop-In Alternatives We Stock
Looking for a replacement for the 631671-B21 (631671-B21 - HP Smart Array P420/2GB FBWC PCI-Express 6GB/s 2-Port Internal SAS RAID Controller Card)? 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 631671-B21
| SKU | 631671-B21 |
|---|---|
| Product | 631671-B21 - HP Smart Array P420/2GB FBWC PCI-Express 6GB/s 2-Port Internal SAS RAID Controller Card |
| Current price | $429.47 |
| Stock status | In Stock |
| Detail page | View 631671-B21 › |
Drop-in replacements for 631671-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.
615418-B21 - HP Smart Array P822/2GB FBWC PCI-Express 6GB/s 2-Ports Internal/4-Ports External SAS/SATA RAID Controller Card
SKU: 615418-B21
Price: $155.79
698529-B21 - HP Smart Array P430/2GB FBWC 6GB 1-Port Internal SAS PCI-Express 3.0 x8 RAID Controller Card
SKU: 698529-B21
Price: $240.00
698535-B21 - HP Smart Array P731m 2GB Fbwc 6GB PCI-Express 3.0 X8 Mezzanine SAS RAID Controller
SKU: 698535-B21
Price: $1,344.00
P440AR-2GB-FBWC - HP Smart Array P440ar Dual Port PCI-Express 3 x8 12GB/s SAS Mezzanine Storage Controller Card with 2GB Flash Back Write Cache
SKU: P440AR-2GB-FBWC
Price: $205.26
698533-B21 - HP Smart Array P830 PCI-Express 3.0 X8 6GB/s 2-Ports Internal SAS Controller with 4GB Fbwc
SKU: 698533-B21
Price: $1,034.53
750000-001 - HP P246BR Smart Array PCI-Express Controller with 4GB (FBWC)
SKU: 750000-001
Price: $57.89
588184-B22 - HP Smart Array P410i PCI-Express 2.0 X8 1GB Fbwc SAS RAID Controller for G7 Servers
SKU: 588184-B22
Price: $89.47
726815-002 - HP Smart Array P840 2-Port SCSI 12Gb/s PCI Express RAID Controller Card with 4GB FBWC
SKU: 726815-002
Price: $149.47
726821-B21 - HP Smart Array P440 PCI-Express 3.0 X8 12GB 1-Port Internal SAS Controller with 4GB Fbwc
SKU: 726821-B21
Price: $163.16
749797-001 - HP Smart Array P440 PCI-Express 3 X8 12GB/s SAS RAID Controller with 4GB Fbwc
SKU: 749797-001
Price: $163.16
572532-B21 - HP Smart Array P410 1Gb/s FBWC 2-Port PCI-Express x8 SAS Controller
SKU: 572532-B21
Price: $197.89
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.