Description: MB559, MB561 Series hard drive trays are available with MB453, 454,455 multi-layered hard extraction module used interchangeably, with the MB876 Series Single Hard Drive External Enclosure swap hard to use, so to facilitate the exchange of data between multiple computers. Applicable ICY DOCK Product type: single-layer external box: MB559US Series multi-layered external box: MB561S-4S, MB561US-4S Features: 1, removable hard disk installation design, saving replacement time, shockproof metal shrapnel, set drive security protection for a wide range swap hard disk, not only with the MB876 Series Single Hard Drive External Enclosure, but also with MB453, 454,455 multi-layered hard extraction module used interchangeably. 4, convenient multi-computer exchange of information