Connect-AC converters are powered by a standard figure-of-8 cable, which makes them convenient and reliable. No more unsightly - and potentially unsafe - external power supply units. Like their battery-powered counterparts, Connect-AC converters offer much more than just format conversion. They also include a test pattern generator and audio test tone. We've even included a flashlight mode for use in dark locations. Also like the Connect converters, there are two models: Connect-AC H2S converts from HDMI to HD-SDI and Connect-AC S2H converts from HD-SDI to HDMI. There is an optional rack-mount kit available that can hold up to four Connect-AC converters.