IO Crest USB 3.0 to Gigabit Ethernet Network Adapter with SuperSpeed 3.0 to 10/100/1000 Mbps Base Ethernet LAN Adapter for Mac OS X, Windows PC Integrated 10/100/1000M transceiver Supports Wake-On-LAN and Real WOW Supports power down/link down power saving Crossover Detection; Auto-Correction Supports Full Duplex flow control (IEEE 802.3x) Fully compliant with IEEE 802.3 and IEEE 802.3u Supports IEEE 802.1P Layer 2 Priority Encoding Supports Microsoft WPD (Wake Package Detection)