Was never really sure what this thing did. It has been sitting in the entertainment center for years. Have the manual the hdmi cord and 2 netgear powerline av500 nano adapter

This SlingBox Pro HD SB300 Digital Media Streamer is an excellent addition to any home entertainment system. With its versatile connectivity options such as Ethernet and USB ports, you can easily stream your favorite media content in high definition with a maximum resolution of 1080p. The model SB300 is designed to work with a variety of audio/video outputs including coaxial F, composite video RCA, digital audio coaxial RCA, composite video BNC, S-video, and component (YPbPr) RCA.

Additionally, this black media streamer is perfect for those who love to watch their favorite content without any interruptions. It has been previously used but is in good working condition. Made in Indonesia, this SlingBox Pro HD SB300 Digital Media Streamer also comes with an HDMI to RCA cable, making it ready to use right out of the box.