The deleyCON Dual mounting frame is used for installation of 2.5 "SSD in a 3 1/2" mounting shaft of a PC case. One would think that a mounting frame, which for a 3 1/2 "hard drive bay is provided, also has exactly the screw, a 3 1/2" drive has, so that the frame can be fitted into the shaft with safety. A 3 1/2 "hard drive has on each side of 3 threaded holes, two external and one is not just centered between. The deleyCON DUAL mounting frame does not have these 3 standardized hole spacing. It is only an outer screw hole and that does not just serve central screw hole, because although almost "has drive, but the frame sides are too short to both outer screws pairs a 3 1/2" of the bottom of the frame, the length of a 3 1/2 - map disk. If one has a housing with toggle clamps or other installation aids for the 3 1/2 "bay, which, as usual, take only the outer thread pairs, you can not install the framework. Here sheet was saved at about 2 cm, which ensures that the frame is not universally applicable. Since it does not help then that the supplied (screws, power cord, SATA cable) is encouraging extensive.