Pro video hardware maker AJA Video Systems is now shipping a professional I/O box called the Io XT with dual Thunderbolt ports, 10-bit up-, down- and cross-conversion in hardware, uncompressed capture, monitoring and mastering, eight-channel SDI audio I/O, analog component and composite output, HDMI input and output (including 3D) and 4:2:2 and 4:4:4 HD and SD formats among other features. The dual T ports allow for daisy-chaining with other TB peripherals.