Replacement for 755997-B21: Drop-In Alternatives We Stock
Looking for a replacement for the 755997-B21 (755997-B21 - HP Microsoft Windows Server 2012 R2 Standard 64-bit License)? 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 755997-B21
| SKU | 755997-B21 |
|---|---|
| Product | 755997-B21 - HP Microsoft Windows Server 2012 R2 Standard 64-bit License |
| Stock status | In Stock |
| Detail page | View 755997-B21 › |
Drop-in replacements for 755997-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.
459864-B21 - HP Virtual Connect Enterprise Manager for ProLiant BL-c7000 with 1 Year 24x7 Software Support License 1 Enclosure Standard PC
SKU: 459864-B21
Price: $1,229.63
HSTNSBN26 - HP Nc364t Quad Port Gigabit Server Adapter PCI-Express (Standard Bracket)
SKU: HSTNSBN26
Price: $184.95
154456-001 - HP Single Channel 64-bit 66MHz PCI Ultra3 SCSI Controller Card for ProLiant Server with Standard Bracket
SKU: 154456-001
Price: $229.47
154457-B21 - HP Single Channel 64-bit 66MHz PCI Ultra3 SCSI Controller for ProLiant Server with Standard Bracket
SKU: 154457-B21
Price: $229.47
155595-001 - HP Single Channel 64-bit 66MHz PCI Ultra3 SCSI Controller for ProLiant Server with Standard Bracket
SKU: 155595-001
Price: $247.37
638886-B21 - HP ProLiant Rack Entry-level Server 1 x Xeon E5649 2.53GHz 12GB Standard
SKU: 638886-B21
Price: $488.21
643763-B21 - HP ProLiant Blade Entry-level Server 1 x Xeon E7-2860 2.26GHz 32GB Standard
SKU: 643763-B21
Price: $942.11
643065-001 - HP ProLiant 4U Rack Entry-level Server 2 x Xeon E7-4830 2.13GHz 4 Processor Support 64GB Standard
SKU: 643065-001
Price: $2,075.79
654080-S01 - HP ProLiant 4U Rack Entry-level Server 2 x Xeon E5649 2.53GHz 8GB Standard
SKU: 654080-S01
Price: $2,847.37
611117-B21 - HP ProLiant Blade Entry-level Server 2 x Xeon L5640 2.26GHz -24GB Standard
SKU: 611117-B21
Price: $8,619.29
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.