ATX12V Specific Guidelines 3.0

For ATX Form Factor with 12-volt connector power supplies.

Mechanical dimension of power supplies has not changed from Multi Rail Desktop Power Supplies, so chassis do need not to change. Below are the current specifications for each size:

Figure 13-1: ATX12V Power Supply Dimensions for Chassis Not Requiring Top Venting

Figure 13-2: ATX12V Power Supply Dimensions for Chassis that Require Top Venting