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Table 6 illustrates the pin connections on the DB-25 connector at the rear of the printer.

	Table 6
Pin No.	Description
1	Chassis ground
2	TXD (transmit data) output from the printer
3	RXD (receive data) input to the printer
4	RTS (request to send) output from the printer
5	Not used
6	DSR (data set ready) input to the printer
7	RS-232 signal ground
8	Not used
9	+5v @ 1A source
10	Not used
11	RS-485 signal ground
12	Not used
13	RS-485 input A(-)
14	RS-485 output A(-)
15	Not used
16	RS-485 input B(+)
17 and 18	Not used
19	RS-485 output B(+)
20	DTR (data terminal ready) output from the printer
21-25	Not used

Zebra Z4M/Z6M Printers User’s Guide 87