... ports support SS, HS, FS, and low speed(LS) traffic.1 downstream ports support HS, FS, and ... low speed(LS) traffic.1 control pipe(endpoint 0, 64-byte ... 1, 1-byte data payload)Backward compatible to USB specification Revision 2.0/1.1.Supports simultaneous ... operation of multiple USB 3.0, USB 2.0 and USB 1.1 devices.Supports USB data transfer rate of ...