4-6 Chapter 4: Motherboard Info
2. ATX power connectors (24-pin EATXPWR, 4-pin ATX12V)
These connectors are for the 24-pin and 4-pin power plugs from the power
supply unit. The plugs from the power supply unit are designed to t these
connectors in only one orientation. Find the proper orientation and push down
rmly until the connectors completely t.
Do not forget to connect the 4-pin ATX12V power plug to the ATX12V connector
on the motherboard. Otherwise, the system will not boot up.
3. IDE connector (40-1 pin PRI_IDE)
This connector is for an IDE 100/66 signal cable, a blue connector for the
primary IDE connector on the motherboard
• Pin 20 on the IDE connector is removed to match the covered hole on the
Ultra DMA cable connector. This prevents incorrect insertion when you
connect the IDE cable.
• Use the 80-conductor IDE cable for Ultra DMA 100/66 IDE devices.
