This is a know issue, Internal USB cables not ok.
Get the desk to a service center and get them replaced, warranty applies (as it is a know problem with the first batch built)
I had this problem with my own desk and with a rental desk in taiwan.
Now i travel with a replacement kit if i have rental desks.
If you have issues getting quick replacement i can send my replacement set.
DO NOT USE OTHER CABLES THAN SUPPLIED BY A&H