The Synology DiskStation DS916+ is a 4-bay network attached storage device designed for use with both PC and Mac computers. It features USB 3.0 connectivity for fast data transfer, a sleek black color, and supports hot swapping of HDD drive types. This DiskStation model is part of the DiskStation product line by Synology, known for its reliable and high-performance network storage solutions. With its compact 3.5-inch form factor and Ethernet (RJ-45) interface, this NAS device offers a convenient and secure storage solution for your data needs. Sold as is. May be missing some accessories.