Sprint bolstered its 4G modem mix on Tuesday by adding a new, straightforward 4G modem. The unbranded U1901 provides WiMAX alone but is designed to work out of the box for both Intel Macs and Windows users through a disc-free install. It has two antenna ports to boost reception in a docking cradle and has a rotating USB connector to fit into the MacBook Air and other notebooks with a tight fit.