Certain HDMI sources have known issues where they do not output enough power over HDMI to power HDMI adapters. In this case, it is best to consider HDMI adapters with external power over USB or with an external power adapter. This affects our HDMI to VGA adapters. See below for alternative solutions.
Standard HDMI to VGA
Our HD2VGAA2 has both audio and a USB Micro B port for external power.
Micro HDMI to VGA
Our MCHD2VGAA2 has both audio and a USB Micro B port for external power.
Mini HDMI to VGA