Q. How can I connect ATX to AT conversion connector?

A． In the case that our ATX power supply is connected to AT connector of motherboard, ATX to AT conversion  connector (our model no. PS5055) is to be used.
"How to connect" is shown in the figure below.

For ATX power supply, main 20Pin connector (P1 on the right) goes to motherboard. When connected to motherboard of AT, connect this 20Pin connector to ATX to AT conversion connector.

ATX to AT conversion connector, PS5055, is shown on the right.
Connect one end to main 20Pin connector of ATX power supply, and P1 and P2 to AT motherboard.
In addition, to perform ON/OFF control by remote of ATX power supply, switch is to be connected to ON/OFF terminal and COM terminal of P9.
To always keep the power supply on status, short ON/OFF terminal and COM terminal.

ON/OFF switch, PS5046, is shown on the right. This switch goes to P9, ATX to AT conversion onnector PS5055.
With this connection, ON/OFF control of all output of power supply is carried out by this switch.