
 37
SCANNER AND CABLE TERMINATIONS 
MS1690-38, Low Speed USB 
Pin Function 
1 Ground 
2  RS232 Transmit Output 
3  RS232 Receive Input 
4 RTS Output 
5 CTS Input 
6 USB D+ 
7 V USB 
8 USB D- 
9 +5VDC 
10 Shield Ground 
MS1690-40, Full Speed USB 
Pin Function 
1 Ground 
2  RS232 Transmit Output 
3  RS232 Receive Input 
4 RTS Output 
5 CTS Input 
6 USB D+ 
7 V USB 
8 USB D- 
9 +5VDC 
10 Shield Ground 
MS1690-106 or MS1691-106, 
RS485S/Full Speed USB 
Pin Function 
1 Ground 
2  RS232 Transmit Output 
3  RS232 Receive Input 
4 IBM A+ 
5 IBM B- 
6 USB D+ 
7 V USB 
8 USB D- 
9 +5VDC 
10 Shield Ground 
S Applicable for IBM® Host applications. 
Figure 21.