How do I connect monitors with Eleven Rack and Pro Tools?

[el biciclista]

I am a Pro Tools HD guy, so please forgive the dumb question.

My son is going to buy:
(1) An Eleven Rack, which comes bundled with Pro Tools LE 8, to record guitar tracks.
(2) A MIDI keyboard to control Pro Tools and create MIDI tracks for use with virtual instruments. This will connect to the Eleven Rack MIDI In.

He will use a MacBook Pro laptop.

He may stay with Pro Tools LE 8, or upgrade to Pro Tools 9 (hopefully the latter).

Question:
(1) How does he connect monitors to this system?
Can these be connected directly from the laptop outputs, or does he need a hardware interface?
(2) Will there be a latency problem when he monitors the mix while recording a guitar track? He would connect the Eleven Rack to the MacBook Pro via USB.

[el biciclista]

OK, I found the Eleven Rack Users Guide and I see the monitors are connected to the Eleven Rack. So, the Eleven Rack acts as the I/O box for Pro Tools.

However, the only connection shown between the Eleven Rack and the computer is the USB connection. this is fine for integrating the Eleven Rack into Pro Tools, but how does the audio data flow between the two? If you are recording into Pro Tools while at the same time monitoring the mix with monitors connected to the Eleven Rack, there have to be audio cables between the two.......lots of audio data will be flowing between the computer hard drives and the Eleven Rack.

What am I missing??? Duh.

[albee1952]

The audio is traveling in both directions over the USB cable, just as it does with an Mbox.