The MB877SK Series is comparable to our highly regarded MB123SK Series, however it has been re-engineered to have all the same features with a more economical design. Constructed of lightweight aluminum body and durable plastic faceplate, the dock still holds true to our emphasis on protection and durability. The stylish all-black door has built in vents for optimal cooling and air flow to keep your drives running at their best. To further enhance the cooling, we included a rear outtake fan. The enclosure uses a screwless design coupled with hot swap capability to make switching out drives a hassle free experience. And to keep your data safe and secure, we have included a key lock security device. A new feature to the dock, while small and subtle, is the 3D LED status lights. This allows the user to keep track of their drives without having to be right in front of the workstation.