http://us.dlink.com/wp-content/uploads/2014/03/DIR-450_DATASHEET_1.00_EN.pdf

D-Link DIR-451, 3G Mobile Router-Wirelss Networking On-The-Go for UMTS/HSDPA Networks, 4-Port 10/100 Switch, 1x Cardbus Slot, 1x USB Port, 1 Year