Alternative to 776445-B21: Better-Value Equivalents in Stock
Comparing the 776445-B21 (776445-B21 - HP 550-Watts ATX Power Supply) against alternatives? Pro Disk Network stocks 12 similar HP parts that offer comparable performance at different price points. Each option below is in-stock, US-warehoused, and tested-and-certified before ship. Bulk pricing is available on quantities of 5+; B2B procurement can use Net 30 with PO.
About the 776445-B21
| SKU | 776445-B21 |
|---|---|
| Product | 776445-B21 - HP 550-Watts ATX Power Supply |
| Stock status | In Stock |
| Detail page | View 776445-B21 › |
Alternatives to 776445-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.
766879-001 - HP 550-Watts 24-Pin ATX Non Hot-Pluggable Power Supply for Proliant DL180 DL160 Gen9
SKU: 766879-001
Price: $176.84
PS-5301-02 - HP 300-Watts ATX Power Supply For HP Pavilion 510/550 Series
SKU: PS-5301-02
Price: $235.79
867876-B21 - HP 550-Watts ATX Power Supply Kit for ProLiant ML110 Gen10
SKU: 867876-B21
Price: $240.96
776444-B21 - HP 550-Watts 120-230V ATX Hot-Swappable Power Supply for ProLiant ML110 Gen9 Server
SKU: 776444-B21
Price: $735.37
405479-002 - HP 300-Watts ATX 100-240V AC 24-Pin ATX Power Supply with Active Power Factor Correction for DC5100 Desktop System
SKU: 405479-002
Price: $73.68
ATX-300-12Z-REV-DDR - HP 300-Watts ATX Power Supply for Pavilion
SKU: ATX-300-12Z-REV-DDR
Price: $139.22
372357-004 - HP 750-Watts 24-Pin ATX Redundant Hot-Pluggable ATX Power Supply for XW9300 WorkStations
SKU: 372357-004
Price: $189.00
372357-002 - HP 750-Watts 24-Pin ATX Redundant Hot-Pluggable ATX Power Supply for XW9300 WorkStations
SKU: 372357-002
Price: $189.00
372357-001 - HP 750-Watts 24-Pin ATX Redundant Hot-Pluggable ATX Power Supply for XW9300 WorkStations
SKU: 372357-001
Price: $250.53
372357-003 - HP 750-Watts 24-Pin ATX Redundant Hot-Pluggable ATX Power Supply for XW9300 WorkStations
SKU: 372357-003
Price: $250.53
How we pick alternatives
Every recommendation above was selected using these criteria:
- Spec parity — capacity, speed, port count, and form factor matched within a 10% tolerance
- Price spread — alternatives shown across the price range, so you can pick on budget
- Brand mix — both OEM-equivalent and trusted aftermarket, all certified
- Reliability data — preferred parts have failure rates below 1% in our 18-month return tracking
- In stock today — shipping today, not 4-6 weeks from now
Want a side-by-side spec comparison?
We can prepare a written comparison covering throughput, power draw, form factor and validated compatibility. Email sales@prodisknetwork.com or call +1 (407) 205-8454 — most quotes ship within 4 business hours.