Acer Veriton S480G Service Manual: Power Supply
https://www.manualslib.com/manual/269383/Acer-Veriton-S480g.html?page=11#manual
Power Supply Mounting Features
Chassis accepts ATX-style power supply
Chasses accepts PS2, PS3 style power supply
Features for internal mounting tab
Location of 4 external mounting holes
Power Supply Electrical Design Feature
300W/250W in stable mode (Acer Assign System Power Unit)
Voltage design should be covered +5V, +3.3V, +12V, +5VSB, -12V (attention to
12V output capability)
Demand for both PFC/Non-PFC solutions (two different quotations are needed)
Minimum 4 Serial ATA power connector solution should be included (by default)
Minimum 1 big4-pin power connector included
Minimum 1 small 4-pin...