Extron’s XTP II CrossPoint Series First AV Platform To Support HDMI 2.1 News by ETA - March 8, 2017 Extron Electronics has announced that their XTP II CrossPoint Series is the only AV technology platform to support the recently-announced HDMI 2.1 specification as well as DisplayPort 1.4. First introduced in 2015, the XTP II included a 50Gbps digital backplane, and now supports the HDMI 2.1 specification’s range of higher video resolutions