The all-new HDAiR wireless USB-to-VGA / HDMI adapter is essentially the ... Atlona has caused quite a stir among computer users looking to integrate their computers into their HD audio video ...

In truth, you should be able to connect an iPhone 5 directly to a second screen with a new Lightning video cable once they arrive, but you’ll need one of those cables due to the 30-pin adapter ...

Contrary to what continuum says (he's usually spot on, though), it's quite normal for a HDMI to VGA adapter to be fairly warm. Ballpark figure for a HDMI to VGA decoder is around 200 mA at 5 volts.

Thunderbolt Gen 1 and 2 don’t support USB 3.1, Type C or even 3.0 for that matter. An adapter wouldn’t have fixed this problem. However, Apple is releasing Thunderbolt 3 later in 2015.

HDMI is really best for connecting a PC to an HDTV. Consequently, I’d go with a DVI cable. That’ll give you a pure digital signal (VGA is analog) and a much sharper picture at higher resolutions.