Cypress offers a complete reference design for developing a fixed-function, low-power 4-port USB 2.0 hub that is production ready. Compliance with USB 2.0
480/12/1.5-Mbps operation
Low-power operation for bus-powered applications
2-port bus-powered keyboard hub support
Fit/Form/Function Compatible with CY7C65640 & CY7C65640A TetraHub(TM)
8x8mm 56-lead QFN (quad flat no-lead) package
Integrated components for lower BOM cost
Individual or ganged port power switching and over current detection
Dedicated LED ports