The low-profile Magewell Pro Capture SDI 4K Plus captures 4K HD video. This PCI Express x4 capture card supports DCI 4K and UHD video formats of up to 4096 x 2160 and has four high-definition BNC ports, two of which support SDI formats of up to 3G-SDI, one of which supports SDI formats of up to 6G-SDI, and one of which supports SDI formats of up to 12G-SDI. Capture uncompressed video from an SDI output of a camera or switcher on your computer for recording, editing, or broadcasting.