Hello, I have a T23 and the USB ports on the back of the docking station are not playing nice. I have a Logitech USB mouse that is attached to the bottom USB port and it looks like it get power, but it does not show up on a "cat /proc/bus/usb/devices". I am using Redhat 8. Thanks Frank Cole Software LLC www.colesoft.com Phone : 540.456.6164 Fax : 540.456.6658 Email : frank_chu@colesoft.com