QL Heaven has been allowed to play a bit with the new Ser-USB device. It is a compact transparent blue box. There are 2 USB slots and a SD card slot. On the reverse side is the 5v power connector and the reset button.
The Hardware comes with a disk with the necessary drivers to be LRESPRed, a file with additional S*BASIC commands, a partition manager task, a monitor task and some other files.
Anyway above is a first glimpse.