Replacement for DPS-300AB-48-A: Drop-In Alternatives We Stock
Looking for a replacement for the DPS-300AB-48-A (Delta DPS-300AB-48 A 300-Watts 100-240V ATX Power Supply for OptiPlex 390 790)? Pro Disk Network ships 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 DPS-300AB-48-A
| SKU | DPS-300AB-48-A |
|---|---|
| Product | Delta DPS-300AB-48 A 300-Watts 100-240V ATX Power Supply for OptiPlex 390 790 |
| Current price | $395.34 |
| Stock status | In Stock |
| Detail page | View DPS-300AB-48-A › |
Drop-in replacements for DPS-300AB-48-A
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.
DPS-1100CB-2A - Delta 1100-Watts 100-240V Redundant Hot Swappable Power Supply for Networking N3048P / N3024P Switch
SKU: DPS-1100CB-2A
Price: $68.42
DPS-550LB-1B - Delta 550-Watts 100-127V / 200-240V Reverse Airflow In Power Supply for S4048T-ON
SKU: DPS-550LB-1B
Price: $124.21
DPS-185AB-1A - Delta 185-Watts 100-240V Power Supply for Inspiron 23-inch 5348 AIO Optiplex 9030 AIO
SKU: DPS-185AB-1A
Price: $136.45
Delta DPS-480CB A 480-Watts 100-240V Power Supply for PowerVault NX300 / PowerEdge R410 R415 R510
SKU: DPS-480CB-A
Price: $205.26
DPS-185AB-1 - Delta 185-Watts 100-240V Power Supply for Inspiron 23-inch 5348 AIO Optiplex 9030 AIO
SKU: DPS-185AB-1
Price: $211.00
DPS-485AB - Delta 485-Watts 100-240V Power Supply for PowerVault MD1020 MD1120
SKU: DPS-485AB
Price: $326.00
Delta DPS-485AB A 485-Watts 100-240V Power Supply for PowerVault MD1020 MD1120
SKU: DPS-485AB-A
Price: $392.99
DPS-488AB - Delta 488-Watts 110-240V Redundant Power Supply for PowerVault MD3000
SKU: DPS-488AB
Price: $182.37
Delta DPS-488AB A 488-Watts 110-240V Redundant Power Supply for PowerVault MD3000
SKU: DPS-488AB-A
Price: $211.00
DPS-755AB - Delta 755-Watts 48V Hot-Swappable Power Supply for ProLiant BL40P Blade Server
SKU: DPS-755AB
Price: $250.53
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.