Chapter 2 hardware functionality, 1 introduction, Figure 2.1: front panel of uno-2173a/af – Advantech UNO 2173A/AF User Manual
Page 18: Figure 2.2: rear panel of uno-2173af, 2 rs-232 interface (com1~com2), Chapter, 2 hardware functionality, Introduction, Rs-232 interface (com1~com2)