Alternative to PWR-2921-51-DC: Better-Value Equivalents in Stock
Comparing the PWR-2921-51-DC (PWR-2921-51-DC - Cisco Power Supply for 2921 / 2951 Series Router) against alternatives? Pro Disk Network stocks 12 similar Cisco 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 PWR-2921-51-DC
| SKU | PWR-2921-51-DC |
|---|---|
| Product | PWR-2921-51-DC - Cisco Power Supply for 2921 / 2951 Series Router |
| Current price | $1,229.05 |
| Stock status | In Stock |
| Detail page | View PWR-2921-51-DC › |
Alternatives to PWR-2921-51-DC
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.
PWR-2921-51-POE - Cisco AC Power Supply with PoE Cisco 2921 / 2951 Integrated Services Router
SKU: PWR-2921-51-POE
Price: $683.88
RPS-ADPTR-2921-51 - Cisco RPS Adapter for 2921 / 2951 Series Router
SKU: RPS-ADPTR-2921-51
Price: $301.16
341-0228 - Cisco Internal DC Power Supply for 2921 / 2951 Series Router
SKU: 341-0228
Price: $2,597.63
PWR-2821-51-AC-IP - Cisco PoE Power Supply for Cisco 2821 / 2851 Routers
SKU: PWR-2821-51-AC-IP
Price: $400.45
Cisco PWR-4450-DC Redundant internal Power Supply For Cisco 4451x Integrated Spare
SKU: PWR-4450-DC
Price: $1,715.58
PWR-C45-2800ACV-2 - Cisco 2800-Watts 200-240V Power Supply for Catalyst 4503-E / 4506-E / 4507R-E / 4510R-E / 4507R+E / 4510R+E
SKU: PWR-C45-2800ACV-2
Price: $127.83
Cisco PWR-C45-1300ACV/2 1300-Watts Power Supply for Catalyst 4503 / 4506 / 4507R / 4510R
SKU: PWR-C45-1300ACV-2
Price: $1,649.75
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.