Completely in line with my expectations, works perfectly with Chrome extension on Mac OSX and Windows. youtube works perfectly with iOS, but there is no extension for Chrome on iOS. The brief installation instructions not very clear that the configuration must be done by first connecting to Wifi Key to reconfigure your wireless network to make visible key by all devices. once that (small) obstacle is overcome, everything works.
I am delighted with my purchase that allows me to view YouTube videos and replay on my TV when I'm not eligible for the TV with my box!