Thread: additional power supply for clearwire modem?

im thinking about getting clearwire for my car so that i am able to have wireless highspeed anywhere i go in my car. i right now, i am running an aopen minipc with a lilliput touch screen. i have two usb hubs, one just for occasional uses in the center console for ipods, thumbdrives, etc. then one main usb hub which has the gps receiver, usb touch screen, usb radio, bluetooth, wifi, and wireless keyboard/mouse.

for my psu, i have the carnetix p1900, soon to install the p2140 with the additional 5v regulator for the main usb hub. so basically my psu is powering the usb hub, screen, and pc. the clearwire modem is a 12v system, and i was wondering, would i need an additional psu just to power that? or is there any way i can have it so that its also powered by my current psu? what would you suggest for my plan? can i run two 12v systems off the one 12v outlet? or would that be not enough power then to run my screen and modem? thanks for any help in advance!