Replacement for 125502-B21: Drop-In Alternatives We Stock
Looking for a replacement for the 125502-B21 (125502-B21 - Compaq Power Supply for Alphaserver DS20E)? Pro Disk Network ships 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 125502-B21
| SKU | 125502-B21 |
|---|---|
| Product | 125502-B21 - Compaq Power Supply for Alphaserver DS20E |
| Current price | $627.95 |
| Stock status | In Stock |
| Detail page | View 125502-B21 › |
Drop-in replacements for 125502-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.
30-48466-01 - Compaq 440-Watts Power Supply for AlphaServer GS80 GS160 GS320
SKU: 30-48466-01
Price: $294.74
H7906-A9 - Compaq 720-Watts Power Supply for AlphaServer ES40 ES45 Model 2
SKU: H7906-A9
Price: $396.89
54-25017-02 - Compaq Main Power Module for AlphaServer GS160/GS320/GS80
SKU: 54-25017-02
Price: $299.25
54-25123-01 - Compaq Auxiliary Power Module for AlphaServer GS160 GS320 GS80
SKU: 54-25123-01
Price: $480.21
H7509-AA - Compaq Auxiliary Power Module for AlphaServer GS160 GS320 GS80
SKU: H7509-AA
Price: $480.21
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.