Features:Suitable for Orange pi 5/5B Development Board Acrylic Enclosure Box;All ports and slot are accurate opening;Case Size:Approx.112x77x35mm/4.41x3.03x1.38inEasy and convenient installation;Made from acrylic material, durable for use. Specifications:Material:AcrylicColor:WhiteCase Size:Approx.112x77x35mm/4.41x3.03x1.38inOption Type:1xCase;1x Case with Fan;1x Case with Fan+Aluminium Heat Sink;1x Case with Fan+Copper Heat Sink; Note:Please allow 1-2cm errors due to manual measurement,please make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes:Package A:(3 Option)1xAcrylic CasePackageB:1xAcrylic Case1xFanPackageC:1xAcrylic Case1xFan1xHeat Sink