problem

[Tetras]

Have seen external DVD drives with dual USB, but have never seen a external HDD needing them. (slim drives)

I've got an old Toshiba one which needs 2 USB ports over USB2.

 

[Nathlm]

Have seen external DVD drives with dual USB, but have never seen a external HDD needing them. (slim drives)

I have seen caddies that require dual usb before, they definitely exist out there