The Prism 853 4K 10bit HEVC/AVC 12G-SDI Encoder Card is a low-latency blade Encoder for Prism 1RU and 2RU rack mount systems. The Prism 853 Card supports 4K, 10-bit, 4:2:2 video encoding in a high-density format. This Encoder card allows you to transmit video to Prism, Cube, Slice, Core, and T-Rax decoders.