... New Original 100Mbps Sierra Wireless AirCard 330U 4G USB Modem and Made in China 4G LTE Modem The AirCard 330U is one of ... Carrier HSPA+, earlier versions of HSPA+ and its predecessors, UMTS, GSM, and GPRS. Its design, which is based on the AirCard 312U USB modem that ... launched in August 2010 for Dual-Carrier HSPA+ networks, is thinner and more ...