Intel SBC-455 - Manual (Page 27)

Chapter 2 Installation 19
Pin assignments
The following table lists the pin numbers and their respective
signals:
IDE Connector (PRIMARY IDE)
Pin Signal Pin Signal
1 Reset 2 GND
3 D7 4 D8
5 D6 6 D9
7 D5 8 D10
9 D4 10 D11
11 D3 12 D12
13 D2 14 D13
15 D1 16 D14
17 D0 18 D15
19 GND 20 N.C.
21 N.C, 22 GND
23 IOW 24 GND
25 IOR 26 GND
27 IORDY 28 BALE
29 N.C. 30 GND
31 IRQ 14 32 -I/O CS16
33 A1 34 N.C.
35 A0 36 A2
37 CS0 38 CS1
39 -ACT 40 GND
IDE LED (IDE LED)
You can connect an LED to indicate that an IDE device is in use.
The pin assignments for this jumper are as follows:
IDE LED pin assignments (IDE LED)
Pin Function
1 -R/W IDE
2 Pull high