EXFO FTB-500 (Window XP) - Manual (Page 72)

Setting Up Your FTB-500
62 FTB-500
Installing a Microphone
Installing a Microphone
On top of being a multitasking test platform, the FTB-500 is a portable
multimedia computer. From the Windows environment, it can use
off-the-shelf third party applications that require a microphone. With these
applications, you can use an external microphone. You can use any
commercially available microphone having a 3.5 mm connector.
To use an external microphone:
Simply connect it to the Audio In port, located on the right side of the unit.