Replaced VMB3000 Base Station with VMB3500. Where is power button? No USB port?

[REB1149]

I replaced my VMB3000 base station with the VMB3500 update . have two questions . 1 Where is the power off button on a 3500 , does it always stay on ? Also question 2 , My VMB3000 has 2 USB 2.0 Ports , the 3500 has none and what are the 2.0 ports for if this base is suppose to be the same thing ? These USB ports arent needed anymore ?Any help & info appreciated 

[TomMac]

No power button , just unplug the power cord as needed

The USB port on the 3000 were not used ( not until the 4000 ) so it's a mute point and they left them out on the 3500

( saved money I guess, same as the 3000 in all other respect )