Rice Lake Datalogic QuickScan QD2100 Linear Imager Hand-held Scanner - Manual (Page 87)

USB Keyboard Speed
Product Reference Guide 79
USB Keyboard Speed
This option specifies the USB poll rate for a USB keyboard.
NOTE
This feature applies ONLY to the USB Keyboard interface.
ENTER/EXIT PROGRAMMING MODE
USB Keyboard Speed = 1ms
USB Keyboard Speed = 2ms
USB Keyboard Speed = 3ms
USB Keyboard Speed = 4ms
USB Keyboard Speed = 5ms
DEFAULT