Features: brand new and high quality Compatible extension: PCIEx1 + COMx6 + WIFIx2. Compatible hard drive: 3.5 inch x 1 + 2.5 inch x 1 or 2.5 inch x 2. Compatible motherboard: 17x17cm / 17x19cm / 19x19cm. Exquisite chis, small and exquisite. Suitable for various scenarios, can be placed horizontally, saves a lot of space. Front panel I / O: USB3.1 (gen1) x2 + USB 2.0 x2 + High Definition O. Multi-face heat dissipation, install-height card slot, CP radiator height limit 50mm/1.97in. Simple panel, front 4xUSB and o interface, easy to use. Specifications: Material: Aluminum Size: approx. 21.5x22.1x9.8 for cm/8.46x8.70x3.86in Thickness: approx. 2mm/0.08in Color:Silver, Black Note: No retail package. Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Install a full-height card slot, and the maximum height of the CPU cooler is 50mm/1.97in. Install a full-height card slot, and can'for t install a 25mm/0.98in thick 3.5-inch hard drive. Package includes: 1PC x Mini ITX for case