Product

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

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.