Replacement for TPN8G: Drop-In Alternatives We Stock
Looking for a replacement for the TPN8G (TPN8G - Dell 155-Watts 100-120V Power Supply for OptiPlex 3240 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 TPN8G
| SKU | TPN8G |
|---|---|
| Product | TPN8G - Dell 155-Watts 100-120V Power Supply for OptiPlex 3240 3440 7440 |
| Current price | $235.79 |
| Stock status | In Stock |
| Detail page | View TPN8G › |
Drop-in replacements for TPN8G
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.
D155E001L - Dell 155-Watts 100-240V Power Supply for OptiPlex 3240 3440 7440
SKU: D155E001L
Price: $184.21
PS-5221-2DF-LF - Dell 220-Watts 100-120V / 200-240V Power Supply for OptiPlex GX520 GX620
SKU: PS-5221-2DF-LF
Price: $96.84
NC905 - Dell 230-Watts 100-120V/200-240V ATX Power Supply for OptiPlex 210L,Dimension E310/3100
SKU: NC905
Price: $96.84
MC633 - Dell 230-Watts 100-120V/200-240V Power Supply for OptiPlex 210L/GX250,Dimension E310/3100
SKU: MC633
Price: $96.84
VP-09500051-000 - Dell 255-Watts 100-120V Power Supply for Optiplex 360 380 580 760 780 960 MT
SKU: VP-09500051-000
Price: $96.84
F255E-00 - Dell 255-Watts 100-120V Power Supply for Optiplex 360 380 580 760 780 960 MT
SKU: F255E-00
Price: $96.84
KC672 - Dell 220-Watts 100-120V / 200-240V Power Supply with PFC for OptiPlex GX520 GX620 Dimension C521
SKU: KC672
Price: $96.84
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
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.