The device connects to any Mac with a thunderbolt port and allows you to install a half-length PCIe board — an ability missing from Mac Minis and Macbooks. That opens up a whole world of exotic features: RAID storage, high-speed networking, video capture or whatever else you can think of that needs a PCIe card.
But like every other Thunderbolt accessory, performance comes at a price. The box — with no PCIe card — weighs in at $US400. It’s available now if you want to spoil someone over Christmas. Or, you could hold off for an upcoming RED-specific model which will let you grab RAW video from the super-expensive cameras. A snip at $US700.