2P=SIN (Serial Data In)數據輸入 in
3P=SOUT (Serial Data Out)數據輸出 out
4P=DTR (Data Terminal Ready)數據終端準備 out
5P=GND (Ground)接地端,公***端
6P=DSR (Data Set Ready)數據設備已準備好 in
7P=RTS (Request To Send)請求發送 out
8P=CTS (Clear To Send)已清除發送 in
9P=RI (Ring Indicator)鈴流指示 in
紅線應該是SOUT
黃線是SIN
綠線和藍線有壹根是GND
把綠藍線接反沒關系
妳可以紅接紅，綠對綠，黃對白，藍對黑