Replacement for N4493: Drop-In Alternatives We Stock
Looking for a replacement for the N4493 (N4493 - Dell 305-Watts Power Supply for OptiPlex GX745 GX755 GX620 GX280)? 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 N4493
| SKU | N4493 |
|---|---|
| Product | N4493 - Dell 305-Watts Power Supply for OptiPlex GX745 GX755 GX620 GX280 |
| Current price | $55.26 |
| Stock status | In Stock |
| Detail page | View N4493 › |
Drop-in replacements for N4493
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 - Dell 305-Watts Power Supply for OptiPlex 320, 330, 360, Dimension 5200, E520, E521 PowerEdge T100, T105
SKU: N305P
Price: $55.26
VP-09500050-100 - Dell 305-Watts 100-240V ATX Power Supply for Optiplex 755 760 780 960
SKU: VP-09500050-100
Price: $106.61
PS-6311-1D - Dell 305-Watts 100-120V / 200-240V ATX Power Supply for Optiplex GX260 X270 Precision 360
SKU: PS-6311-1D
Price: $109.03
P192M - Dell 305-Watts ATX Power Supply for OptiPlex 320, 330, 360, GX620, 740, 745, 755, 960 and Dimension 5200, E520, E521
SKU: P192M
Price: $110.53
PS-6311-6DF1-LF - Dell 305-Watts 100-240V ATX Power Supply for OptiPlex 320 330 360 GX620 740 745 755 960 / Dimension 5200 E520 E521
SKU: PS-6311-6DF1-LF
Price: $110.53
L305P-03 - Dell 305-Watts Dual SATA ATX Power Supply for OptiPlex 320 330 360 GX620 740 745 755 960 Dimension 5200 E520 E521
SKU: L305P-03
Price: $110.53
L305N-01 - Dell 305-Watts 100-120V 200-240V Power Supply for OptiPlex GX520 GX745
SKU: L305N-01
Price: $115.58
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
H305P-06 - Dell 305-Watts Power Supply for OptiPlex Gx740 745 755 960 / PowerEdge T110
SKU: H305P-06
Price: $126.68
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.