The main product image shows that all four 2.5 inch drives are installed in the same orientation. You are not. The manual doesn't make it clear either. The top two discs are mounted upside down on the underside of the detachable center panel. When installing four 9.5mm hard drives, there is only a millimeter of clearance between the top surfaces of the drives. Because of this tight packaging, ventilation is poor...despite the fact that free space is lost between these drives and optional drives. It also complicates plugging and cable routing, as vertically adjacent power connectors and SATA connectors are upside down and sideways (actually grossly swapped), resulting in twisted and tight fit or sharp bends, depending on the design of the connector or splitter, which precludes the use of some others designs off. Continuous.
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