I just got a new ThinkPad T410 and also got a power hub. Like an idiot, I unpacked everything at once and now can't tell which power cord goes with what. Can someone please tell me how long the regular computer power cord is - the part that goes from the wall to the adapter? Either cord will fit into either adapter, so maybe it doesn't matter? One cord is only about 3' long, the other is over 5'. Thank you!