Alternative to PWR-3640-DC: Better-Value Equivalents in Stock
Comparing the PWR-3640-DC (Cisco PWR-3640-DC DC Power Supply For 3640 Router Spare) 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-3640-DC
| SKU | PWR-3640-DC |
|---|---|
| Product | Cisco PWR-3640-DC DC Power Supply For 3640 Router Spare |
| Stock status | In Stock |
| Detail page | View PWR-3640-DC › |
Alternatives to PWR-3640-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.
Cisco PWR-2911-POE Power Supply with PoE Switch for 2911 Router Spare
SKU: PWR-2911-POE
Price: $395.34
Cisco PWR-1941-POE AC Power Supply with PoE For 1941 Integrated Services Router Spare
SKU: PWR-1941-POE
Price: $487.89
Cisco PWR-3845-AC-IP Inline AC IP Power Supply For Cisco 3845 Routers Spare
SKU: PWR-3845-AC-IP
Price: $840.95
Cisco PWR-4450-DC Redundant internal Power Supply For Cisco 4451x Integrated Spare
SKU: PWR-4450-DC
Price: $1,715.58
Cisco CP-PWR-CORD-UK 2.5M Transformer Power Cord for CP-PWR-CUBE-3 / CP-PWR-CUBE-3
SKU: CP-PWR-CORD-UK
Price: $147.86
Cisco CVPN3000-PWR 110-220 V AC VPN 3000 Concentrator AC Power Supply Spare
SKU: CVPN3000-PWR
Price: $259.50
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.