Computer Hardware User Manual

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Pin-4 RTS, Request To Send Pin-4 (OUT)
Pin-2 TXD, Transmit Data Pin-5 (OUT)
Pin-5 CTS, Clear To Send Pin-6 (IN)
Pin-20 DTR, Data Terminal Ready Pin-7 (OUT)
Pin-22 RI, Ring Indicator CTS Pin-8 (IN)
Pin-7 GND, Signal Ground Pin-9
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