Can I Use an External Media Player or Computer? July 22, 2023 05:04 Updated Yes! There is an auxiliary HDMI input on the back of the Proto Epic that can be used to connect an external device. Related articles Luma User Guide - 1.0 How Much Hard Drive Space Does the Proto Epic Have? What color are the LEDs and can I change the color? How to Connect an External HDMI Device to the Proto M2 What Are the Dimensions of the Proto Luma?