http://www.sanwasupply.co.jp/product/syohin.asp?code=USB-HUB15CBL&cate=9 uhub3: Atmel Standard USB Hub, class 9/0, rev 1.10/3.00, addr 2 uhub3: 4 ports with 4 removable, self powered port 1 addr 2: self powered, config 1, Standard USB Hub(0x3301), Atmel(0x03eb), rev 3.00