- Pentium 4 Full Size PICMG CPU Card User's Manual

INSTALLATIONS
18 IB810 User’s Manual
Hard Disk Drive LED Connector: Pins 10 and 20
This connector connects to the hard drive activity LED on
control panel. This LED will flash when the HDD is being
accessed.
Pin # Signal Name
10 HDD Active
20 5V
J2: ATX 12V/+12V Power Connector
Pin # Signal Name
1 Ground
2 Ground
3 +12V
4 +12V
IDE1, IDE2: EIDE Connectors
IDE1: Primary IDE Connector
Signal Name Pin # Pin # Signal Name
Reset IDE 1 2 Ground
Host data 7 3 4 Host data 8
Host data 6 5 6 Host data 9
Host data 5 7 8 Host data 10
Host data 4 9 10 Host data 11
Host data 3 11 12 Host data 12
Host data 2 13 14 Host data 13
Host data 1 15 16 Host data 14
Host data 0 17 18 Host data 15
Ground 19 20 Protect pin
DRQ0 21 22 Ground
Host IOW 23 24 Ground
Host IOR 25 26 Ground
IOCHRDY 27 28 Host ALE
DACK0 29 30 Ground
IRQ14 31 32 No connect
Address 1 33 34 No connect
Address 0 35 36 Address 2
Chip select 0 37 38 Chip select 1
IDE1
Activity 39 40 Ground