Dell 255W Power Supply T164M | OptiPlex 755 / 760 / 780 / 960 / 980 DT (24 + 4 Pin + SATA x2 + FDD x1)
2️⃣ Key Features
- New original Dell 255W power supply for OptiPlex 755 / 760 / 780 / 960 / 980 Desktop Tower (DT)
- Dell part numbers: T164M / 0T164M
- PSU model numbers: H255P-00 / L255P-01 / F255E-00 / AC255AD-00
- Dimensions: 135 x 100 x 124 mm - Dell DT (Desktop Tower) form factor
- Connector layout: 24-Pin + 4-Pin CPU + SATA x2 + FDD x1
- 255W for Penryn / Nehalem OptiPlex DT desktop platform
- Built-in OVP / OCP / SCP protection
- DT form factor - different from same-generation SFF version (PW116)
3️⃣ Technical Specifications
| Brand |
Dell |
| Condition |
New Original (Genuine Dell) |
| Dell PN |
T164M / 0T164M |
| PSU Model |
H255P-00 / L255P-01 / F255E-00 / AC255AD-00 |
| Wattage |
255W MAX |
| Input Voltage |
100-240V AC, 50-60Hz, 4.5A |
| Output |
255W MAX continuous output |
| Form Factor |
Dell DT / Desktop Tower (135 x 100 x 124 mm) |
| Connector Type |
24-Pin + 4-Pin CPU + SATA x2 + FDD x1 |
| Hot Plug |
No |
| Protection |
OVP / OCP / SCP |
4️⃣ Compatible Models
Dell OptiPlex Series (DT):
- Dell OptiPlex 755 DT
- Dell OptiPlex 760 DT
- Dell OptiPlex 780 DT
- Dell OptiPlex 960 DT
- Dell OptiPlex 980 DT
Always verify the part number / model number on your existing PSU label before purchasing.
5️⃣ Package Contents
- 1x Dell 255W Power Supply T164M (New Original)
6️⃣ Warranty
- 90-day replacement warranty
- Covers manufacturing defects; physical damage and improper installation not included
7️⃣ Additional Notes
- DT (Desktop Tower) form factor - 135 x 100 x 124 mm. Physically different from same-generation SFF version.
- Includes FDD connector - useful for legacy floppy drive connections.
- Verify Dell DP/N on existing PSU label matches T164M before ordering.
- New original unit - genuine factory Dell unit, not refurbished or aftermarket.