Replacement for 377522-B21: Drop-In Alternatives We Stock
Looking for a replacement for the 377522-B21 (377522-B21 - HP PCI-Express X4 Expander Mezzanine Card for ProLiant DL580 G3 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 377522-B21
| SKU | 377522-B21 |
|---|---|
| Product | 377522-B21 - HP PCI-Express X4 Expander Mezzanine Card for ProLiant DL580 G3 Server |
| Current price | $265.26 |
| Stock status | In Stock |
| Detail page | View 377522-B21 › |
Drop-in replacements for 377522-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.
811216-B21 - HP Smart Array SATA 6Gb/s / SAS 12Gb/s PCI-Express 3x8 Expander Card for ProLiant ML350 G9 Server
SKU: 811216-B21
Price: $54.74
411009-001 - HP PCI-Express X4 / X8 Expander Card for ProLiant Dl580 / Dl570 G5 Server
SKU: 411009-001
Price: $602.11
868138-001 - HP Dual Port 100Gb 20GHz Single Mezzanine Cable HP Dual Port 100Gb 20GHz Single Mezzanine Cable for ProLiant XL260a Gen9 Server
SKU: 868138-001
Price: $96.84
410500-001 - HP Dual-Port x4 DDR Infiniband PCI-Express Mezzanine Card for ProLiant BL460c G5 Blade Server
SKU: 410500-001
Price: $71.58
761665-001 - HP PCI-Express G3 Mezzanine Pass-Thru Card for ProLiant WS460c G9 Graphic Server
SKU: 761665-001
Price: $184.21
449422-001 - HP PCI Express x8 3 Slot Mezzanine Option Card for ProLiant DL580 G5 Server
SKU: 449422-001
Price: $205.26
377552-B21 - HP PCI Express Mezzanine Card for ProLiant DL580 G3 Server
SKU: 377552-B21
Price: $411.97
691904-003 - HP PCI Express Pass-Through Mezzanine Card for ProLiant G8 Server
SKU: 691904-003
Price: $942.11
881101-B21 - HP 24-Port 12Gb/s SAS Expander Card with Cable for ProLiant DL580 G10 Server
SKU: 881101-B21
Price: $1,577.38
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.