3.  Place the scanner in the cradle. The 
scanner LED will be red to indicate 
charging. When the scanner is charged, 
the LED will turn off. 
 
 
Cradle Mode, Connection (MS840B) 
Cradle Mode (with SCM support) 
In order to establish a proper connection between your computer and a scanner 
through a cradle, we suggest that you follow these step-by-step instructions: 
1.  Ensure the cradle powered, check the Power LED. 
2.  Turn on your computer. 
3.  Connect the cradle to the USB, RS232, or PS2 port of your computer 
respectively with a USB cable, RS232 cable, or PS2 cable. 
USB cable will operate as HID device (keyboard) 
4.  Determine that the power LED on the cradle is bright in solid green and the 
communication status LED on the cradle is bright in solid blue. 
5.  By default, the MS840 operates in cradle mode. Thus, by using at most 3 
scanners, scan the Cradle Address barcode on the bottom side of the cradle. 
 
 
The Cradle Address barcode is on the bottom side of the cradle.
 
 
 
 
 
6.  The scanner LED should turn off and beep shortly one time with a high tone 
and the communication status LED on the cradle should flash in blue. 
7.  The Pager button can be used to verify correct connection of scanner and 
cradle. 
8