The aluminum storage device has removable trays designed to house up to four 2.5" SATA SSDs or hard drives purchased separately. The device is equipped with two Thunderbolt 3 ports—the first one connects to the MacBook Pro, and the second one can be used to connect or daisy chain Thunderbolt 3 or USB-C peripherals.
With Software RAID, Akitio said four striped SSDs can reach data transfer speeds of up to 1375 MB/s, while four striped hard drives max out at around 400 MB/s. Thunderbolt 3 provides sufficient bandwidth to connect dual 4K displays to the latest MacBook Pro and complete other data transfers simultaneously.
A dedicated DisplayPort 1.2 video output provides connectivity to the 4K displays at 60Hz, while the device supports Power Delivery up to 15W to notebooks that support charging from a 5V/3A power source. 15W is hardly sufficient wattage for the latest MacBook Pro, which fully charges at up to 85W with Apple's own charger.
Akitio said the Thunder3 Quad Mini will be available in March for $329 alongside five other Thunderbolt 3 storage devices it sells.