The specs for the new PMs say 4 USB ports, 2 on the back and 2 on the keyboard. IMO this is a bit misleading - One of the back ports is taken up by the keyboard, and one of the keyboard ports is taken up by the mouse. This leaves you with one port on the back - usually occupied by a printer, and one on the keyboard for everything else. Am I reading this right or am I missing something? Thanks.