Datalogic QuickScan Lite QW2100 - Manual (Page 73)

USB Keyboard Speed
Product Reference Guide 63
ENTER/EXIT PROGRAMMING MODE
USB Keyboard Speed
This option specifies the USB poll rate for a USB Keyboard.
NOTE
This feature applies ONLY to the USB Keyboard interface.
$CKBSP01 
USB Keyboard Speed = 1ms
$CKBSP02 
USB Keyboard Speed = 2ms
$CKBSP03 
USB Keyboard Speed = 3ms
$CKBSP04 
USB Keyboard Speed = 4ms
$CKBSP05 
USB Keyboard Speed = 5ms
DEFAULT