Replacement for CX305N: Drop-In Alternatives We Stock
Looking for a replacement for the CX305N (CX305N - Dell 305-Watts Power Supply For Dimension 3100/5150/E510/E520/Optiplex MT GX320/GX620/SC430/SC440)? Pro Disk Network ships Dell drop-in replacements and equivalent modern parts from US inventory. Every alternate below is in-stock today with same-day shipping for orders placed before 2pm ET. If your unit is still under warranty, contact our engineering team — we offer cross-shipping for B2B customers on Net 30 terms.
About the CX305N
| SKU | CX305N |
|---|---|
| Product | CX305N - Dell 305-Watts Power Supply For Dimension 3100/5150/E510/E520/Optiplex MT GX320/GX620/SC430/SC440 |
| Current price | $189.47 |
| Stock status | In Stock |
| Detail page | View CX305N › |
Drop-in replacements for CX305N
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.
N305P-04 - Dell 305-Watts 100-120V / 200-240V ATX Power Supply for Dimension 3100 5150 E510 E520 / OptiPlex MT GX320 GX620 SC430 SC440
SKU: N305P-04
Price: $117.89
Dell NPS-305EB B 305-Watts 100-120V / 200-240V ATX Power Supply for Dimension 3100 5150 E510 E520 / OptiPlex MT GX320 GX620 SC430 SC440
SKU: NPS-305EB-B
Price: $150.09
N305P-00 - Dell 305-Watts 100-120V / 200-240V ATX Power Supply for Dimension 3100 5150 E510 E520 / OptiPlex MT GX320 GX620 SC430 SC440
SKU: N305P-00
Price: $182.37
CX305N-00 - Dell 305-Watts Power Supply For Dimension 3100/5150/E510/E520/Optiplex MT GX320/GX620/SC430/SC440
SKU: CX305N-00
Price: $205.26
N305P-03 - Dell 305-Watts 100-120V / 200-240V ATX Power Supply for Dimension 3100 5150 E510 E520 / OptiPlex MT GX320 GX620 SC430 SC440
SKU: N305P-03
Price: $205.26
X8129 - Dell 305-Watts ATX Power Supply For Dimension 3100/5150/E510/E520/Optiplex MT GX320 GX620/SC430 SC440
SKU: X8129
Price: $205.26
0X8129 - Dell 305-Watts ATX Power Supply For Dimension 3100/5150/E510/E520/Optiplex MT GX320 GX620/SC430 SC440
SKU: 0X8129
Price: $205.26
Dell NPS-305CB B 305-Watts 100-120V / 200-240V ATX Power Supply for Dimension 3100 5150 E510 E520 / OptiPlex MT GX320 GX620 SC430 SC440
SKU: NPS-305CB-B
Price: $205.26
Dell HP-P3107F3P LF 305-Watts 100-120V / 200-240V ATX Power Supply for Dimension 3100 5150 E510 E520 / OptiPlex MT GX320 GX620 SC430 SC440
SKU: HP-P3107F3P-LF
Price: $209.37
H305P-00 - Dell 305-Watts 100-120V / 200-240V ATX Power Supply for Dimension 3100 5150 E510 E520 / Optiplex MT GX320 GX620 SC430 SC440
SKU: H305P-00
Price: $229.08
How we pick replacements
Every recommendation above was selected using these criteria:
- Drop-in compatibility — same form factor (2.5"/3.5", PCIe slot, SFP port, etc.), so it fits the original chassis without modification
- Equivalent or better performance — matched on RPM/IOPS/speed/throughput, never downgraded
- Same-brand-preferred — we list the OEM-equivalent first when available, then trusted aftermarket
- Warranty coverage — 90-day Pro Disk warranty on every part, with 1-year option for B2B
- In stock today — never recommend a part that is on backorder
Need help confirming compatibility?
Our engineers validate every replacement against your specific server, switch, or chassis model before shipment. Email sales@prodisknetwork.com with your platform model (e.g., Dell PowerEdge R740, HP DL380 Gen10, Cisco Catalyst 9300) and we will confirm the exact part number that drops into your hardware.