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Adapter that makes ATX power supplies compatible with the Original Xbox.

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ATX2Xbox PCB

<-- Front of Xbox -- Back of Xbox -->

ATX2Xbox

Adapts an ATX power supply for use with the original Xbox.

The v1.2-1.5 PSU connector fits a standard 4.20mm 20 pin ATX plug, v1.0-1.1 fits a 3.96mm pitch connector. Don't cut up your Xbox power supply unless it doesn't work.

BOM

Qty Value/Model Description Marking URL (Passive components provided as example)
1 0353182020 20 or 24 pin male ATX header (4.20mm) ATX https://www.digikey.com/short/zf9pj8mr
2 CL21A106KOQNNNG 0805 10uF Capacitor C1, C2 https://www.digikey.com/short/w9059zhz
2 MMBT3904 TRANS NPN 40V 0.2A SOT23 Q1, Q2 https://www.digikey.com/short/zz7rhz0t
2 RC1608F102CS 0603 1k Ohm Resistor R1, R2 https://www.digikey.com/short/1vdfpvv4
1 RC0603JR-07470RL 0603 470 Ohm Resistor R3 https://www.digikey.com/short/fc9hb4hm
1 TLV1117 3.3v or LM1117IMP 3.3v IC REG LIN 3.3V 800MA SOT223-4 U1 https://www.digikey.com/short/71td288c

Connector for v1.2-1.5 Xbox

Qty Value/Model Description URL
1 0039012200 20-pos 4.20MM ATX Plug https://www.digikey.com/short/9rhwrdtf
15 0039000038 CONN SOCKET 18-24AWG CRIMP TIN https://www.digikey.com/short/25r5h0df

Connector for v1.0-1.1 Xbox

Qty Value/Model Description URL
1 4-640426-2 12POS 3.96mm IDC Female https://www.digikey.com/short/wjbrndfq
1 1-643067-2 CONN STRAIN RELIEF COVER 12POS https://www.digikey.com/short/0tzvvf31

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Adapter that makes ATX power supplies compatible with the Original Xbox.

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