User manual

Connect Tech Xtreme/104-Plus, PCI-104 and PCI/104 Express Family User Manual
Revision 0.12
Note: Configuration information for the RS-232/422/485/TTL model,
including jumper settings and pinouts, is located in Electrical Interfaces
(RS-232/422/485/TTL models).
Figure 4: Xtreme/104-Plus Opto RS-232/422/485 Hardware Components (4 Port Model)