With the ATX standard also came the ATX power supply (PSU), the standard for which ... the -5V rail was removed, and the -12V rail made optional. The ATX power connector with the mainboard was ...
A benchtop power supply is a key thing to have for any aspiring ... The design features banana plugs outputting +12V, -12V, +5V, and +3.3V, with all outputs appropriately fused for safety.