OEMs such as HP, Gateway, Compaq, and Dell often deviate from accepted PC power supply standards. Unique shapes, connectors, and wiring are all signs of a proprietary design. Below is the cross reference of popular Gateway computers and part numbers to the appropriate power supply upgrades or replacements.

Manufacturer Part Number: Gateway P/N 102015 and 6500936 replace with ATX-300-12EB3
Applications Notes:
Gateway Desktop 500GR, 503GR, 504GR, 505GR, 506GR, 508GE, 550GR, 552GE, etc...

Manufacturer Part Number: Gateway P/N 6506055R and Hipro HP-P3087F3 replace with HP-P3087F3LF
Applications Notes:
Bestec ATX-300-12EB3 Rev. SR2 is Gateway OEM part.
Gateway DX300 desktop series models DX300MC, DX300S, DX300QS, DX300X.
Gateway 500GR/GE
Gateway P/N: 102015, 129074, 6500936, and 6500937

Manufacturer Part Number: Delta Model: DPS-300AB-15B REV:00F replace with ATX-300-12E
Applications Notes:
Bestec Model: ATX-300-12E REV:D1R
300 Watt 20 Pin (with SATA Hard Drive Connector)
Some have SATA power leads and some don't. It matters which one you have.
(4) peripheral power connectors required replace with 300Watt ATX-300-12ED
Delta Model : DPS-300AB-15B REV:00F
Part Numbers: 100929, 102544, 103108, 103563, 6501061, 6506054, 6506054R, 6506055, 6506056, 6506056R, 6506071R, 6506085r, 6506086R, HP-P3027F3 Hipro, WMEDPS-300pb-1A, WMEDPS-300PB-1A, WMEHP-P3027F3

Manufacturer Part Number: Gateway P/N 6500565 replace with ATX-300WG
Applications Notes:
Original equipment has Power Factor Correction (PFC). Replacement does not have PFC, which is a power feature transparent to the end user's experience.
Original unit is autoranging. Replacement unit is switch selectable for 115/230VAC input.

Manufacturer Part Number: Gateway P/N 6500192, 6500329, 6500361, 6500401, 6500451, 6500495, 6500505, 6500506, 6500507, 6500510, 6500545 replace with MicroATX-180W
Applications Notes:
Astec ATX90-3405, Astec ATX93-3405, Newton NPS-90AB-1 B, Newton NPS-90-2A, Newton NPS-145PB-117 A, and Delta DPS-145PB-117 A/B are common Gateway OEM parts.
Original unit may have 3 pin connector for board control of power supply fan. Replacement part operates without this connector.

Manufacturer Part Number: Gateway P/N 100744 replace with ATX-250-12E
Applications Notes:
Bestec ATX-250-12E OEM part.
Original LED for power status

Manufacturer Part Number: Gateway LC2 / BATC replace with MicroATX-180NV
Applications Notes:
Gateway BATC /Essential 433c /Essential 500c /Essential 633c /Essential e866 /Essentials 900C /Essentials 933

Manufacturer Part Number: Gateway P/N 6500611 replace with ATX-300WG
Application Notes:
Newton NPS-250EB B is common Gateway OEM part.
Original unit may have 3 pin connector for board control of power supply fan. Replacement part operates without this connector.
Original unit has LED for power status. LED not provided in replacement part.
Original unit is autoranging. Replacement unit is switch selectable for 115/230VAC input.

Manufacturer Part Number: Gateway P/N 6500527 replace with MicroATX-180W
Application Notes:
Newton NPS-90EB A is common Gateway OEM part.
Original equipment has Power Factor Correction (PFC). Replacement does not have PFC, which is a power feature transparent to the end user's experience.
Original unit may have 3 pin connector for board control of power supply fan. Replacement part operates without this connector.

Manufacturer Part Number: Gateway P/N 6500525 and 6500583 replace with ATX-300WG
Application Notes:
Original unit may have 3 pin connector for board control of power supply fan. Replacement part operates without this connector.
Original unit has LED for power status. LED not provided in replacement part.
Original unit is autoranging. Replacement unit is switch selectable for 115/230VAC input.

Manufacturer Part Number: Gateway P/N 6500525 and 6500583 replace with ATX-300WG
Application Notes:
Newton NPS-250CB A and NPS-250CB B are common Gateway OEM part.
Original unit may have 3 pin connector for board control of power supply fan. Replacement part operates without this connector.

Manufacturer Part Number: Gateway P/N 6500470 replace with ATX-300WG
Application note:
Astec ATX250-3505 is common Gateway OEM part.

Manufacturer Part Number: Gateway P/N 6500652 and 6500703 replace with ATX-300WG
Application Notes:
Newton NPS-250HB A is common Gateway OEM part.
Original unit has LED for power status. LED not provided in replacement part.

Manufacturer Part Number: Gateway P/N 6500582 and 6500704 replace with ATX-300WG
Application Notes:
Newton NPS-160CB-1 A is common Gateway OEM part.
Original unit has LED for power status. LED not provided in replacement part.

Manufacturer Part Number: Gateway P/N 6500457, 6500526, and 6500563 replace with ATX-300WG
Application Notes:
Newton NPS-200PB-119A/B is common Gateway OEM part.
Original unit may have 3 pin connector for board control of power supply fan. Replacement part operates without this connector.

Manufacturer Part Number: Gateway P/N 6500612 replace with ATX-300WG
Application Notes:
Newton NPS-200PB-119C is common Gateway OEM part.
Original unit has LED for power status. LED not provided in replacement part.
Original unit may have 3 pin connector for board control of power supply fan. Replacement part operates without this connector.

Manufacturer Part Number: Gateway p/n 6500684 replace with ATX-300WG
Application Notes:
LITEON PS-5161-2G is common Gateway OEM part.
Original unit has LED for power status. LED not provided in replacement part.

Manufacturer Part Number: Gateway P/N 6500055, POW145005AAWW, POW145006AAWW, POW145002AAWW, POW145004AAWW replace with ATX-300WG
Application Notes:
Astec ATX145-3485, ATX145-3505 and PowerTronics PK-6145-DT, PK-6145DT-3 are common Gateway OEM parts.

Manufacturer Part Number: HP-U271GF3 LF Rev. 02 Gateway WMD56.04270.Q01 Profile 6 OEM Power Supply with HP-U271GF3LF01
Application Notes:
Gateway WMD56.04270.Q01, Part Number: 6506098R are common Gateway OEM parts.

Manufacturer Part Number: Gateway P/N 6500048, POW145003AAWW, POW0015AO1, POW0016AO1, POW145001ACWW replace with AT-250G
Application Notes:
Astec SA145-3435 and PowerTronics CK-4145-DE, SK-4145-DE are common Gateway OEM parts.