Interface: USB2.0;Connector shape:PC side:USB Ax1/USB hub side:USB Ax4;Power supply method: Bus power;USB cable length: approx. 7cm (excluding the connector);Maximum transfer rate: USB2.0 High Speed/480Mbps (theoretical value) USB1.1 Full Speed 12Mbps (theoretical value);Supplyable current: 4 ports total max. 400mA (less than 100mA for each port);External dimensions: Approx. 87.0 mm (W) x 22.0 mm (D) x 12.0 mm (H) (excluding cable);Duration: 6 months Please note that some of the models are made exclusively for Japanese market hence the specifications and interface language is all in Japanese and cannot be changed to a different language. Also the voltage is adopted for Japanese standard ~ 100V ## About us want.IP Inc (a group company of Yahoo Japan) the leading cross-border e-retailer of all kinds of Japan products. We source all the products from official distributors or manufactures] ## Overseas Shipping Information As this is an overseas delivery product it may take up to 2~5 business days to ship out. However there may be a slight delay depending on the local delivery status and customs procedures. ## Warranty Since this product is manufactured for Japanese market warranty is not supported in your country. ## Voltage For electronic equipment it is recommended to use a transformer just in case. This is because electronic equipment for Japan is designed to be used at 100V. (Some products are globally compatible.).