G-Speed Shuttle XL TB3 BEEPING!?

G-Technology G-SPEED & G-SAFE
1

There is beeping noises in a random pattern coming from the G-Speed when I am exporting video using Adobe Media Encoder from iMac Pro. The video is a relatively large file but it is exporting fast. As it exports though, the beeping noises are on and off (but mostly on). What could cause this or what could this mean?

Thanks