Atari 8-Bit Computer

Power Port

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400, 800, and 1200XL have a barrel power jack/connector.

According to the Atari 8-Bit FAQ: The original power supply (C014319) is output rated: 9V AC, 15.3 VA, 18.5W. The wattage requirement was later changed to 19W. Another model (C017945) is output rated: 9V AC, 31 VA, 50W.

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All models after the 400, 800, 1200XL have a 7 pin power port.

Pin	Description
1	+5V
2	Shield
3	Ground
4	+5V
5	Ground
6	+5V
7	Ground