Asus M3A78-T - Manual (Page 48)

2-24 Chapter 2: Hardware information
2. IDE connector (40-1 pin PRI_IDE)
The onboard IDE connector is for the Ultra DMA 133/100/66/33 signal cable.
There are three connectors on each Ultra DMA 133/100/66/33 signal cable:
blue, black, and gray. Connect the blue connector to the motherboard’s IDE
connector, then select one of the following modes to configure your device.
• 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 133/100/66/33 IDE devices.
If any device jumper is set as “Cable-Select,” make sure all other device
jumpers have the same setting.
Drive jumper setting Mode of
device(s)
Cable connector
Single device Cable-Select or Master – Black
Two devices
Cable-Select
Master Black
Slave Gray
Master Master Black or gray
Slave Slave