Thinkpad X200 ultrabase disk connection without restart

Hi, I have this problem: When I have thinkpad in ultrabase and switch it on, everything works. But if it’s switched on and I just put it to the ultrabase, I don’t see the disk in ultrabase (led doesn’t light) and I have to reboot my computer (logout and login doesn’t work).
Is there any way to rescan devices (ideally automatically after putting to ultrabase) without reboot?