https://esupport.sony.com/U...

4K Ultra HD media player for use with compatible 2013 Sony 4K TVs (XBR-X850A and XBR-X900A series)
built-in 2-terabyte hard drive
storage capacity can be expanded by connecting an external hard drive (sold separately)
Internet-ready — connect to Video Unlimited 4K online store from Sony to access a library of 4K Ultra HD feature films
two HDMI outputs (one is for audio/video signals, one is audio-only)
Ethernet port for a wired connection to a home network
rear-panel USB 2.0 port for connecting to an external hard drive
front-panel USB 3.0 port
front-panel SD Card slot for viewing photos
9-7/8" diameter x 2-1/8"H
weight: 4.84 lbs.