The IODD is basically a small drive enclosure, not a "stupid" USB drive.
I was more thinking of devices like this, this or this. Which have the simplicity of a normal USB device (just plug it in and go) and come with an automatically updating label so you can find the correct dongle.
But yeah, nowadays, I'd probably prefer the IODD thing.
Yep, after moving from Germany to the UK I was pretty surprised that in the UK you’re not supposed to get this kind of information from your ISP.
In Germany you can get your own DSL/cable/fibre modem and your ISP has to give you the necessary information to get these devices into their network.