Intel PCM-3370 - Manual (Page 121)

109 Appendix B
B.25 JP3 PCI VIO Select
B.26 JP4 COM1 RI Input Select
Table B.26:
JP3 PCI VIO Select
Pin Function
1-2 VCC
2-3 VCC3
Default NULL *
Table B.27:
JP4 COM1 RI Input Select
Pin Function
1-2 RI *
2-3 VCC
1 2 3 1 2 3
VCC VCC3
1 2 3 1 2 3
RJ* VCC