Space for Net Card and space for 4 x 2.5” SATA drives (max. 15mm thick). The hole for the second Ethernet port of H4+ and H4 Ultra is user-configurable: use a cutter to separate it from the rear panel. This case is not compatible with the H2/H3 series. Cooling fan and net card are not included in this product. We recommend that you use an electric screwdriver when assembling the cooling fan with this case. We recommend that you use SATA Data and Power Cable (200mm) for this product. A thin 92x92x15mm cooling fan can be installed internally as an option. Package contents: Top panel Rear panel Front panel Bottom panel Inner bracket Left/Right Panel 2 x 2.5″ SATA HDD/SSD bracket 4 x 20mm (M/F) PCB Supports 2 x 16-9mm (M/F) PCB Supports (steel) 4 x 50mm (F/F) PCB Supports 4 x 50mm (M/F) PCB Supports 24 x 6mm Truss Head Bolts 4 x Rubber Feet (Round / Clear)