RS-232C connector (D-Sub 9-pin,
male)
1
NC
2
RXDA
3
TXDA
4
DTR
5
GND
USB connector (Type A, female)
1
V
BUS
2
Data–
3
Data+
4
Ground
USB connector (Type B, female)
1
VCC (+5 V)
2
Data–
3
Data+
4
Ground
64
Specifications
1
5
9
6
6
NC
7
RTS
8
CTS
9
NC
(4.4 - 5.25 V)