This is a Sonic Mania: Collectors Edition that has a Raspberry Pi 3 installed. It has both HDMI out and an AV jack (adapter sold separately) for old-school RCA TVs AND 3 back USB ports. It is powered by a 5v 2.5a usb charger (included). Has 2 authentic front controller ports for real Sega Genesis controllers. Comes with 2 real Sega Genesis 6 button controllers (controllers are used and have been tested) and 1 Playstation style USB controllers. It has built in Wi-Fi and Bluetooth so it supports most of the Bluetooth controllers out there. Comes with a 64gb micro sd with games and Retropie 4.2 pre-installed and configured for the Sega Genesis controllers and the usb controller. Has a functional power switch and Functional red power led just like the real Sega Genesis. Kodi 17 installed. Raspberry Pi has a heatsink installed. Complete and ready to play. Comes with easy to follow instructions.
Available for purchase on Etsy and Ebay
https://www.etsy.com/shop/CXPStore
http://stores.ebay.com/compuxparts
