D-Link DWM-222 4G LTE Class 3 USB Adapter with Integrated Antenna for Windows XP/Vista/7/8, Mac OS X 10.5 - Black Software Features : Connection Manager ; Phonebook , SMS messaging ,APN Manager MicroSD card slot (microSD card not included, supports up to 32 GB) Integrated antenna Built-in drivers and software; no CD-ROM required 103 x 34 x 11.5 mm (4.06 x 1.34 x 0.45 inches)