Replacement for MH596: Drop-In Alternatives We Stock
Looking for a replacement for the MH596 (MH596 - Dell 280-Watts ATX Power Supply for OptiPlex GX 320, 520, 620, 740, 745, 755 and Dimension C521)? 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 MH596
| SKU | MH596 |
|---|---|
| Product | MH596 - Dell 280-Watts ATX Power Supply for OptiPlex GX 320, 520, 620, 740, 745, 755 and Dimension C521 |
| Current price | $96.84 |
| Stock status | In Stock |
| Detail page | View MH596 › |
Drop-in replacements for MH596
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.
H280P-01 - Dell 280-Watts 100-127V / 200-240V ATX Power Supply for OptiPlex GX 320 520 620 740 745 755 / Dimension C521
SKU: H280P-01
Price: $157.07
NH429 - Dell 280-Watts 12V ATX Power Supply for OptiPlex GX 320/520/620/740/745/755,Dimension C521
SKU: NH429
Price: $157.07
Dell HP-Q2828F3P LF 280-Watts 100-127V / 200-240V ATX Power Supply for OptiPlex GX 320 520 620 740 745 755 / Dimension C521
SKU: HP-Q2828F3P-LF
Price: $157.07
0NH429 - Dell 280-Watts 12V ATX Power Supply for OptiPlex GX 320/520/620/740/745/755,Dimension C521
SKU: 0NH429
Price: $157.07
U9087 - Dell 280-Watts ATX Power Supply for OptiPlex GX 320/520/620/740/745/755,Dimension C521
SKU: U9087
Price: $165.79
0U9087 - Dell 280-Watts ATX Power Supply for OptiPlex GX 320/520/620/740/745/755,Dimension C521
SKU: 0U9087
Price: $165.79
RT490 - Dell 280-Watts ATX Power Supply for OptiPlex GX 320/520/620/740/745/755,Dimension C521
SKU: RT490
Price: $167.53
0RT490 - Dell 280-Watts ATX Power Supply for OptiPlex GX 320/520/620/740/745/755,Dimension C521
SKU: 0RT490
Price: $167.53
P9550 - Dell 280-Watts ATX Power Supply for OptiPlex GX 320, 520, 620, 740, 745, 755 and Dimension C521
SKU: P9550
Price: $182.37
0P9550 - Dell 280-Watts ATX Power Supply for OptiPlex GX 320, 520, 620, 740, 745, 755 and Dimension C521
SKU: 0P9550
Price: $182.37
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.