 
 
19 
Multi-1ALL/PCI 
- RS422 Model 
 
1. 9 Pin Connector (Male) 
 
2. RS422 Jumper Configuration 
 
 
3. Mode Change 
When installing the device driver, select either point-to-point mode or multi-drop mode 
by software. The default is point-to-point mode. 
 
4. RS422 Point to Point Connection