Intended Use : The product is intended to be ued as a DIN-rail mount adaptor and is suitable for industrial use. It supports various micro controller boards and 3.5'' drive bay form factor computer accessories such as an internal USB hub. Controller Boards can be mounting on pre-drilled holes : Fits most popular embedded controller boards Mounting posts and screws are supplied to attach your controller board. Drive bay accessories can be fitted : All 3.5''drive bay form factor computer accessories ( eg Sedna Internal 10 Port USB hub,..etc) Dimensions (W x H x D) :107 x 99 x 40 mm DIN rail : 35 mm (C45) Material : Industrial grade ABS + PC Package Content : 1 x DIN rail mount adaptor 6 x Mounting posts 12 x Mounting screws 1 x Operating manual