Space for a network interface card and 4x 2.5" SATA drives (max. 15 mm thick). The hole for the second Ethernet port of the 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. A thin 92x92x15-mm fan can be installed internally as an option. The fan is not included in this product. We recommend using an electric screwdriver when mounting the fan with this case. For this product, we recommend using a SATA data and power cable (200 mm). Parts list