Connecting The Power Supply Cable; Powering Up - ECS Photon Extreme KN3 SLI2 Manual

2.8 Connecting the Power supply cable

The ATX power connector is keyed for proper insertion. There are two
connectors for 4-pin and 24-pin ATX power cable. The plastic clip on
the power connector should lock over the plastic tab on the
motherboard power connector.
Connecting 20/24-pin power cable
Users please note that the 20-pin and 24-pin power cables can
both be connected to the ATX connector. With the 20-pin power
cable, just align the 20-pin power cable with the pin 1 of the ATX
connector. However, using 20-pin power cable may cause the
system to become unbootable or unstable because of insufficient
electricity. A minimum power of 300 W is recommended for a
fully-configured system.
With ATX v1.x power supply, users please
note that when installing 20-pin power
cable, the latche of power cable clings to
the left side of the ATX connector latch.
20-pin power cable
2-6
With ATX v2.x power supply, users please
note that when installing 24-pin power
cable, the latch of power cable connector
clings to the right side of the ATX connec-
tor latch.
24-pin power cable
Users please note that when installing 4-pin
power cable, the latches of power cable
and the ATX12V match perfectly.
4-pin ATX power connector

2.9 Powering up

Turn on the power to the monitor and the computer. If necessary,
format your hard disk drive and install an operating system.