Thunderbolt accessories obviously haven’t exactly taken off like wildfire—they’re actually still fairly uncommon, particularly now that USB 3.0 ports have been added to the latest Macs. But there are still professional accessories that can benefit from Thunderbolt’s additional speed, including peripherals like Magma’s new ExpressBox 1T ($479) and earlier ExpressBox 3T ($979). Promising twice the speed of USB 3.0 and twelve…