Alternative to K421C: Better-Value Equivalents in Stock
Comparing the K421C (K421C - Dell 250-Watts Power Supply for Studio Inspiron Slim line SFF 530S 531S 537s 540s / Vostro Slim line SFF 200 200s 220s 400) against alternatives? Pro Disk Network stocks 12 similar Dell 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 K421C
| SKU | K421C |
|---|---|
| Product | K421C - Dell 250-Watts Power Supply for Studio Inspiron Slim line SFF 530S 531S 537s 540s / Vostro Slim line SFF 200 200s 220s 400 |
| Stock status | In Stock |
| Detail page | View K421C › |
Alternatives to K421C
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.
PWJ55 - Dell 250-Watts ATX Power Supply for Studio Inspiron Slim line SFF 530S 531S 537s 540s / Vostro Slim line SFF 200 200s 220s 400
SKU: PWJ55
Price: $96.84
0W206D - Dell 250-Watts 100-240V Power Supply for Studio Inspiron Slim line SFF 530S 531S 537s 540s / Vostro Slim line SFF 200 200s 220s 400
SKU: 0W206D
Price: $192.63
W206D - Dell 250-Watts 100-240V Power Supply for Studio Inspiron Slim line SFF 530S 531S 537s 540s / Vostro Slim line SFF 200 200s 220s 400
SKU: W206D
Price: $192.63
0PWJ55 - Dell 250-Watts ATX Power Supply for Studio Inspiron Slim line SFF 530S 531S 537s 540s / Vostro Slim line SFF 200 200s 220s 400
SKU: 0PWJ55
Price: $282.20
04G185021240DE - Dell 250-Watts ATX Power Supply for Inspiron Slim Line SFF 530S 531S 537s 540s / Vostro Slim Line SFF 200 200s 220s 400
SKU: 04G185021240DE
Price: $78.47
04G185021200DE - Dell 250-Watts ATX Power Supply for Inspiron Slim Line SFF 530S 531S 537s 540s / Vostro Slim Line SFF 200 200s 220s 400
SKU: 04G185021200DE
Price: $136.63
04G185021203DE - Dell 250-Watts ATX Power Supply for Inspiron Slim Line SFF 530S 531S 537s 540s / Vostro Slim Line SFF 200 200s 220s 400
SKU: 04G185021203DE
Price: $153.92
0K350J - Dell Qflix DVD Burner with CinemaNow Movie Download Inspiron/ Studio/ XPS Desktops / Studio/ Inspiron/ Studio/ XPS Laptops
SKU: 0K350J
Price: $337.13
K350J - Dell Qflix DVD Burner with CinemaNow Movie Download Inspiron/ Studio/ XPS Desktops / Studio/ Inspiron/ Studio/ XPS Laptops
SKU: K350J
Price: $337.13
0N038C - Dell 250-Watts Power Supply For Inspiron 530s, 531s and Vostro Slim Line SFF 200, 200s, 220s, 400
SKU: 0N038C
Price: $136.84
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.