Polycom VVX 150 Manual page 196

Connect an Additional VVX EM50 Expansion Module
You can connect up to two VVX EM50 expansion modules to a VVX 450 business IP phone.
Note When you connect expansion modules to a VVX 450 phone, you can connect additional
USB devices to the rear port of the phone and the side port on the second connected
expansion module. The side USB port on the expansion module can support low-
powered devices, such as headsets, USB flash drives, or a smartphone to charge the
phone.
Procedure
1 Power off the VVX 450 business IP phone.
2 Lay the VVX 450 phone with the connected expansion module face-down on the table.
3 Remove the screw from the left side of the connected expansion module, as shown.
4 Insert the USB plug on the second VVX EM50 expansion module into the side USB port on the
first connected expansion module.
Printed from Polycom, Inc. (http://documents.polycom.com) #{renderLang "en" MsgPDFPage} 196