Asus Motherboard A7N8X-VM - Manual (Page 24)

1-14 Chapter 1: Product Information
1.11 Connectors
This section describes and illustrates the connectors on the motherboard.
1. IDE connectors (40-1 pin PRI_IDE, SEC_IDE)
This connector supports the provided UltraATA/133/100/66/33 IDE hard disk
ribbon cable. Connect the cable’s blue connector to the primary
(recommended) or secondary IDE connector, then connect the gray connector
to the UltraATA/133/100/66/33 slave device (hard disk drive) and the black
connector to the UltraATA/133/100/66/33 master device. It is recommended
that you connect non-UltraATA/133/100/66/33 devices to the secondary IDE
connector. If you install two hard disks, you must configure the second drive as
a slave device by setting its jumper accordingly. Refer to the hard disk
documentation for the jumper settings. BIOS supports specific device bootup.
If you have more than two UltraATA/133/100/66/33 devices, purchase another
UltraATA/133/100/66/33 cable. You may configure two hard disks to be both
master devices with two ribbon cables – one for the primary IDE connector and
another for the secondary IDE connector.
Pin 20 on each IDE connector is removed to match the covered hole
on the UltraATA cable connector. This prevents incorrect orientation
when you connect the cables.
For UltraATA/133/100/66/33IDE devices, use an 80-conductor IDE
cable.
A7N8X-VM IDE Connectors
NOTE: Orient the red markings
(usually zigzag) on the IDE
ribbon cable to PIN 1.
SEC_IDE
PIN 1
PRI_IDE
A7N8X-VM