Replacement for 4G456: Drop-In Alternatives We Stock
Looking for a replacement for the 4G456 (4G456 - Dell 250-Watts ATX Power Supply for Dimension 2200, 4300, 4400, 4500, 4600 and OptiPlex GX240, GX260, GX270)? 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 4G456
| SKU | 4G456 |
|---|---|
| Product | 4G456 - Dell 250-Watts ATX Power Supply for Dimension 2200, 4300, 4400, 4500, 4600 and OptiPlex GX240, GX260, GX270 |
| Current price | $189.47 |
| Stock status | In Stock |
| Detail page | View 4G456 › |
Drop-in replacements for 4G456
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.
04G456 - Dell 250-Watts ATX Power Supply for Dimension 2200, 4300, 4400, 4500, 4600 and OptiPlex GX240, GX260, GX270
SKU: 04G456
Price: $189.47
8K855 - Dell 145-Watts 100-120V / 200-240V ATX Power Supply for Dimension 2200
SKU: 8K855
Price: $125.47
08K855 - Dell 145-Watts 100-120V / 200-240V ATX Power Supply for Dimension 2200
SKU: 08K855
Price: $125.47
2M940 - Dell 145-Watts 100-127V / 200-240V ATX PFC Power Supply for Dimension 1100 2200 3000 4400
SKU: 2M940
Price: $143.39
02M940 - Dell 145-Watts 100-127V / 200-240V ATX PFC Power Supply for Dimension 1100 2200 3000 4400
SKU: 02M940
Price: $143.39
PS-5141-3D2 - Dell 145-Watts 100-127V / 200-240V ATX PFC Power Supply for Dimension 1100 2200 3000 4400
SKU: PS-5141-3D2
Price: $485.53
K2946 - Dell 250-Watts 100-127V / 200-240V ATX Power Supply for Dimension 8300 4600 / OptiPlex GX60 GX270
SKU: K2946
Price: $96.84
02Y054 - Dell 250-Watts ATX Power Supply for OptiPlex GX270,Dimension 2400/3000 Micro Tower
SKU: 02Y054
Price: $128.95
2Y054 - Dell 250-Watts ATX Power Supply for OptiPlex GX270,Dimension 2400/3000 Micro Tower
SKU: 2Y054
Price: $128.95
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.