The FE1.1s chip is a high-performance, low-power integrated circuit that enables a USB 2.0 HUB with four output ports and corresponding status LEDs. It requires a minimum number of external components, which are essentially a quartz for the clock that defines the speed of the downstream ports (device outputs). It is fully compatible with the Universal Serial Bus Revision 2.0 (USB 2.0) specification and supports, on the Host side (Upstream