Alternative to 577266-B21: Better-Value Equivalents in Stock
Comparing the 577266-B21 (577266-B21 - HP VMW VSPHERE ESS TO ESS PLUS UPG NM LIC) 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 577266-B21
| SKU | 577266-B21 |
|---|---|
| Product | 577266-B21 - HP VMW VSPHERE ESS TO ESS PLUS UPG NM LIC |
| Stock status | In Stock |
| Detail page | View 577266-B21 › |
Alternatives to 577266-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.
JG533A - HP MSR Open Application Platform (OAP) with VMware vSphere FIC Module
SKU: JG533A
Price: $294.74
681840-B21 - HP Blc7000 Platinum Enclosure W/1 Phase 2 Pwr Supplies 4 Fans Rohs Trial Ic Lic
SKU: 681840-B21
Price: $347.37
643954-101 - HP 460-Watts 100-240V AC Common Slot High Efficiency Platinum Plus Hot-Pluggable Switching Power Supply for ProLiant DL380P/DL385 Gen8
SKU: 643954-101
Price: $47.37
865399-201 - HP 500-Watts 200-277V 80 Plus Platinum Power Supply for ProLiant DL380 Gen10
SKU: 865399-201
Price: $47.37
660184-001 - HP 460-Watts 100-240V AC Common Slot High Efficiency Platinum Plus Hot-Pluggable Switching Power Supply for ProLiant DL380P/DL385 Gen8
SKU: 660184-001
Price: $47.37
643954-301 - HP 460-Watts Platinum Plus Hot-Pluggable Power Supply Kit for Proliant ML350 G8 DL380 G8 DL388P G8
SKU: 643954-301
Price: $47.37
643951-101 - HP 460-Watts Common Slot Platinum Plus Hot-Pluggable Power Supply for Proliant DL380P DL385 Gen8
SKU: 643951-101
Price: $47.37
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.