This 28TB My Cloud EX2 Ultra is compatible with laptops, PCs, iOS and Mac. It has two bays, a black colour and is manufactured by Western Digital. The form factor is 3.5 inches and is a portable external HDD. The drive type supported is HDD, and it is 171.45mm in height, and 99.06mm in width. The storage format for this device is HDD only, and it has in-built media server and auto power on/off features. The write speed is 1x, and it has a storage capacity of 27GB. The interface is both wireless and USB 3.0, and it belongs to the EX2 Ultra product line. This is an external drive that is useful for network-attached storage and file sync.