Buffalo USB2.0 Bus power 4 ports Which also Hub black BSH4U318D2BK

Four-port type that can connect four USB devicesCompatible with both Windows and MacDirectly attached cable, no worries about lossSupported model PC with USB port that supports USB host functionSupported OS Windows 10 / 8.1 / 7, Mac OSX 10.9 or later, Interface USB2.0/1.1 (Type-A), Data transfer rate USB2.0 Maximum 480Mbps (theoretical value), USB1.1 Maximum 12Mbps (theoretical value)Number of ports 4 ports, Power supply method Bus power, Supply current 4 ports total within 440mA, Cable length Approx. 7cm (excluding connector), External dimensions (W x H x D) 95 x 15 x 23mm, Weight Approx. 32gPackage dimensions (W x H x D) 105 x 165 x 24 mm, Package weight Approx. 57 g, Operating environment Temperature 5°C 40°C, Humidity 20 80 (no condensation), Period 6 monthsProduct Configuration Main unit, User's Manual/Book, Connector Cap