Yealink EXP50 User Manual page 18

Yealink EXP50 User Guide
Connect the EXP50 color-screen expansion module and the IP phone using the supplied
3.
connecting sheet and screw.
If you want to connect two or more expansion modules, pull out the silica gel and connect
two expansion modules as below.
Connecting two expansion modules on a single host phone is shown as below:
Connect the USB jack on the host phone and the mini USB jack on the expansion module
4.
using one supplied cable.
10