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Main image of T164M Genuine OEM 255 Watt Dell Optiplex 580 760 780 960 980 Desktop Power Supply Unit PSU L255P-01 Mini-ATX 24-Pin SATA

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T164M Genuine OEM 255 Watt Dell Optiplex 580 760 780 960 980 Desktop Power Supply Unit PSU L255P-01 Mini-ATX 24-Pin SATA

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PN(s): WU123 D390T F283T G238T FR597
Fits: Optiplex 580 760 780 960 980
PNs: WU123 N249M V6V76 FR597 CY826 RM110 C112T
D390T F283T G238T NPS-305KB VP-09500098 DPS-255BB
Form Factor: Desktop

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Replace/Upgrade your PSU Switching power supply with this genuine OEM part.
Type: APFC Desktop Power Supply Unit-PSU
Part Number: T164M Manufacturer
Part Number:
PS-5261-3DF1-LFModel:
L255P-01Condition: NewForm
Factor: DesktopMax
Power: 255 watt-Connections- Mini 24-Pin Connector2 x SATA ConnectorFloppy Drive Connector4-Pin P4 ConnectorFits model (s)
But Not Limited To: Optiplex 580 760 780 960 980Compatible Part Number (s)
But Not Limited To: WU123 N249M V6V76 FR597 CY826 RM110 C112T D390T F283T G238TCompatible Model Number (s)
But Not Limited To: PS-5261-3DF
NPS-305KB VP-09500098-000 DPS-255BBNote: Please look at the picture (s) and check part number to make sure it's compatible with your system.

Additional Information
First Listed on Newegg	April 28, 2026

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Warranty

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Return for refund within: 30 days
Return for replacement within: 90 days
This item is covered by The Best Part, Inc. Return Policy

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Item#: 9SIC6J1KVX4148