bro, about cwr-835m

1) how many web camera can attach? if i install another usb port, can use it as survillance camera? and the other usb port is for my usb modem.. is it possible?

2) i put that device (cwr-635m) 1 km from my home, how can i access the ongoing recording? no need another pc right? just a pc to access it, but cwr-635m no need pc at the present location as it plug at the normal socket.. am i right?