Datalogic Magellan 8300 Product Reference Manual page 179

CAUTION
Product Reference Guide
Keyboard Wedge J Interface Selection
Remember to cover any unused bar codes on this and the facing
page to ensure that the scanner reads only the bar code you intend
to scan.
Great care should be taken to select the correct interface type, since
you can cause damage to the scanner and/or POS terminal by
attempting to change to an incompatible interface. ALWAYS make
interface selections with the host cable DISCONNECTED.
INTERFACE TYPE = KEYBOARD WEDGE J
Interface Related Features
167