My case had a removable half height slot for USB - motherboards frequently have
unused USB controllers (my supermicro X7DCA-3 has a total of 10 USB controllers, only two
have connections to the case... and the connections are small USB hub devices...
One controller in the rear, one on the front panel (which, as hubs, each has multiple
One USB project I thought of was a nearline storage array using USB connections..
The disks would be offline until turned on (only one at a time), then automounting
would take over. Control of the array would be by a USB device that turns on/off a
Usefull for backup disks...