The Just Add Power 2G+ SDI PoE transmitter adds SDI support to the HD over IP system and has all of the features of 2G+. SD/HD/3G-SDI formats. Stereo output with audio delay. Local HDMI loopout. Null modem-integrated RS232. HDMI pass-through. The 2G+ SDI PoE transmitter is fully compatible with all 2G and 2G+AVP models and viewable on any Just Add Power receiver. Add an SDI source to your HD over IP system without the need for an SDI-HDMI converter.