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USB 1.1/2.0 Specification Compatibility Compatible with OHCI (Open Host Controller Interface) Hot-Swappable and real Plug & Play capability Provides two downstream ports with root hub function Connects up to 127 devices in a tiered star configuration Each port works with full speed (12Mbps) and low speed (1.5Mbps) devices Supports individual port over-current and inrush current protections Provides Bus fault detection and reconfiguration PCI interface specification V.2.1 compliant