What Power Supply do I need with my TouchIT Baord? You do not need an external power supply for the TouchIT Board, it is self powered over 5V USB. By Andi| 2015-03-17T13:52:42+00:00 March 17th, 2015|Comments Off on What Power Supply do I need with my TouchIT Baord? Share This Story, Choose Your Platform! FacebookTwitterLinkedinRedditWhatsappGoogle+TumblrPinterestVkEmail About the Author: Andi CEO at TouchIT Technologies.