First, let's look at what a shared link is. A shared link enables communication and the sharing of resources with each other. In the HX3, the shared link can extend the functionality of USB downstream ports, connecting up to four USB 2.0 downstream ports and up to four additional SS T_X and R_X for internal communication. For example, in embedded systems, the SS T_X and R_X can connect to a USB 3.2 camera or to a card reader bridge-chip. For independent control, HX3 has a downstream V_BUS enable pin and a power enable pin. Any connection failures initiate toggling of its V_BUS enable pin. The triggers in the downstream port re-initiate the enumeration process as an “unplug, disconnect, and connect” event. This is a unique feature implementation to support the shared link in the HX3 hub.