CPU : Intel Core i7 (5th Gen) 5557U / 3.1 GHz
RAM : 0 MB / 16 GB (max) SO-DIMM 204-pin Support 2 slots
HARD DRIVE: no HDD Support M.2 (PCI Express 3.0 x4 / SATA)
Wireless Protocol : 802.11a/b/g/n/ac, Bluetooth 4.0 LE
GRAPHICS CONTROLLER : Intel Iris Graphics 6100 Support DisplayPort, HDMI
AUDIO OUTPUT : 7.1 channel surround High Definition Audio

http://www.intel.com/content/www/us/en/nuc/nuc-kit-nuc5i7ryh.html