4G LTE USB Adapter, 150 Mb LTE USB Stick, LTE Cat.4 Download speeds of up to 150 Mb/s and upload of up to 50 Mb/s, UMTS/DC-HSPA+/HSPA/WCDMA/GSM/GPRS/EDGE backwards compatible, with built-in MicroSD slot for MicroSD cards up to 32 GB, automatic installation of software and drivers (built-in), status LED, Compatible with Windows XP/Vista/7/8/10, Mac OS X 10.5 and later