Replacement for 9121N: Drop-In Alternatives We Stock
Looking for a replacement for the 9121N (9121N - Dell 200-Watts 100-240V Power Supply for Dell OptiPlex 3440 7440)? 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 9121N
| SKU | 9121N |
|---|---|
| Product | 9121N - Dell 200-Watts 100-240V Power Supply for Dell OptiPlex 3440 7440 |
| Current price | $113.68 |
| Stock status | In Stock |
| Detail page | View 9121N › |
Drop-in replacements for 9121N
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.
0K0564 - Dell 200-Watts 100-127V / 200-240V ATX Power Supply for OptiPlex GX150
SKU: 0K0564
Price: $128.95
K0564 - Dell 200-Watts 100-127V / 200-240V ATX Power Supply for OptiPlex GX150
SKU: K0564
Price: $128.95
3MV8H - Dell 250-Watts 100-127V/200-240V Power Supply for Vostro 200, Inspiron 530s/620s, OptiPlex 390/790/990
SKU: 3MV8H
Price: $143.39
03MV8H - Dell 250-Watts 100-127V/200-240V Power Supply for Vostro 200, Inspiron 530s/620s, OptiPlex 390/790/990
SKU: 03MV8H
Price: $143.39
PS-5201-1D1A - Dell 200-Watts 100-120V / 200-240V ATX Power Supply for OptiPlex GX100 GX110 GX200
SKU: PS-5201-1D1A
Price: $160.00
Dell NPS-200PB-73 M 200 Watts 100-120V / 200-240V ATX Power Supply for OptiPlex GX110
SKU: NPS-200PB-73-M
Price: $185.68
PS-5201-5D - Dell 200-Watts 100-120V / 200-240V ATX Power Supply for OptiPlex GX1
SKU: PS-5201-5D
Price: $189.47
NPS-200PB-73 - Dell 200 Watts 100-120V / 200-240V ATX Power Supply for OptiPlex GX110
SKU: NPS-200PB-73
Price: $291.75
9228C - Dell 200-Watts 100-120V/200-240V ATX Power Supply for OptiPlex GX110
SKU: 9228C
Price: $344.33
PS-5201-1D1 - Dell 200-Watts 100-120V / 200-240V ATX Power Supply for OptiPlex GX100 GX110 GX200
SKU: PS-5201-1D1
Price: $344.33
09228C - Dell 200-Watts 100-120V/200-240V ATX Power Supply for OptiPlex GX110
SKU: 09228C
Price: $344.33
PS-5201-8D1 - Dell 200-Watts 100-120V / 200-240V ATX Power Supply for OptiPlex GX50 GX150
SKU: PS-5201-8D1
Price: $344.33
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.