- First International Computer Laptop User Manual

Pin Assignments
B.4 PS/2 Mouse / Ext. Keyboard Mini-DIN Connector
Following is the pin assignment of the PS/2 connector:
No Signal Description Type
1 MOUSE_CLK External clock for mouse or keyboard I/O
2 EKB_CLK External clock for mouse or keyboard I/O
3 +5vs 5v power supply O
4 Gnd Ground I
5 EKB_DATA External data for mouse or keyboard I/O
6 MOUSE_DATA External data for mouse or keyboard I/O
B.5 USB Connector
The pin assignment of the USB port connector is as follows:
No Signal Description Type
1, 5, 9, 10, 11, 12 GND Ground O
2 USBP0+ USB port0 bus signal O
3 USBP0- USB port0 bus signal O
4 +5VS USB port0 power
6 USBP1+ USB port1 bus signal
7 USBP1- USB port1 bus signal
8 +5VS USB port1 power
B.6 CD-ROM IDE Connector
The following is the pin assignment for the CD-ROM IDE connector:
NO. Signal Description Type
5 CDROMRESET# Reset secondary disk O
33 RSDA0 Secondary disk address 0 O
31 RSDA1 Secondary disk address 1 O
34 RSDA2 Secondary disk address 2 O
21 RSDD0 Secondary disk data 0 I/O
19 RSDD1 Secondary disk data 1 I/O
17 RSDD2 Secondary disk data 2 I/O
15 RSDD3 Secondary disk data 3 I/O
13 RSDD4 Secondary disk data 4 I/O
11 RSDD5 Secondary disk data 5 I/O
9 RSDD6 Secondary disk data 6 I/O
7 RSDD7 Secondary disk data 7 I/O
6 RSDD8 Secondary disk data 8 I/O
8 RSDD9 Secondary disk data 9 I/O
10 RSDD10 Secondary disk data 10 I/O
12 RSDD11 Secondary disk data 11 I/O
14 RSDD12 Secondary disk data 12 I/O
16 RSDD13 Secondary disk data 13 I/O
18 RSDD14 Secondary disk data 14 I/O
20 RSDD15 Secondary disk data 15 I/O
35 RSDCS1# Secondary disk chip select for 100 range O
36 RSDCS3# Secondary disk chip select for 300 range O
28 RSDDACK# Secondary DMA acknowledge O
22 RSDDREQ Secondary DMA request I
B-4 FIC A550 Service Manual