Yaesu WIRES-X FT3D Instruction Manual page 16

 FTM-400XDR/XDE/DR/DE, FTM-300DR/DE or FTM-100DR/DE
When using FTM-400XD/D, FTM-300DR/DE or FTM-100D, the cable connection with the personal computer is the
same for both Access Point and Direct Operation.
1. Refer to the figure to connect the SCU-20 PC connection cable supplied with the SCU-40 WIRES-X connection
cable kit (sold separately) and the audio cable.
The connection is complete.
When communicating via the Internet in "Portable HRI Mode", refer to "Adjusting Audio Level in the Access Point
(Portable HRI Mode)" (page 54) or "Adjusting Audio Level in the Direct Operation (Portable HRI Mode)" (page
56) and adjust the audio level of the computer.
SCU-20
15