24
The P1 power connector is the first ATX power supplies and motherboards used a single power connector. It also has 20 pins.
P1
A P1 connector is a power connector found on ATX power supplies. It is used to provide main power to the motherboard, and to control ACPI functionality (tell the power suppy to turn off and back on).
P1
p1
P 12 Connector
I know it as a P4 power connector. it works for many CPU's.
A 20 pin connector.
12 volts
A lot of hard disk docking stations use these kind of power supplies.
The most common power supply connectors for motherboards will be either a 20 or 24 pin connector. Older unit used less pins like the ATX but the cure standard is the 20 or 24 pin main connector.
systems that have the standard ATX motherboards.