Hardware and in practice
We extensively tested the Matrox DS1 with a new 13-inch Apple MacBook Air and a somewhat older Apple Mac mini. The DS1 worked right-away with both computers. The USB 3.0 port and the active gigabit connection worked like they should with good transfer rates. When we connected a USB 3.0 SSD it also performed very well when connected to the USB 3.0 port on the Matrox DS1.
When you open up the DS1 you'll find a PCM2912A audio codec from Texas Instruments, a USB 3.0 controller from Fresco Logic, a Broadcom BCM57781 gigabit controller, an NXP LPC1114F controller, and a basic (and cheap) ARM Cortex M0 controller. All of them are placed around an Intel controller which provides the connection with the Thunderbolt controller.