Quatech DSCLP-100 - Manual (Page 25)

The X2 clock mode locks the ports
hardware clock at double the standard
rate. The baud rate the port runs at will
always be double the rate requested by
the applications. This mode is useful
230,400 X2
The X1 clock mode mimics a standard
COM port. The hardware drivers lock
the clock to the standard rate. The port
will run at the baud rate requested by
the application.
115,200 X1
Auto clock mode enables applications to
request any baud rate up to 921,600.
The hardware drivers will select the
correct clock multiplier based on the
baud rate requested
921,600 Auto
Description Max bps Clock Mode
Data Rate Multiplier
25 DSCLP/SSCLP-100 User's Manual