USB Interface USB 2.0 Device, Support 12Mbps full speed operation, Support 480Mbps high speed operation, Support suspend mode and remote wake-up resume, Support USB standard commands, Support vendor specific commands, Efficient TX/RX FIFO auto management, Embedded SRAM for RX/TX packet buffering, Supports 4 endpoints (Control, Interrupt, Bulk_IN, Bulk_OUT), Supported Classes: USB Common Class, USB Communications Class Ethernet Support IEEE 802.3u 100BASE-TX and IEEE 802.3 10BASE-T standards, Support IEEE 802.3x flow control function for 100BASE-TX and 10BASE-T, Support IEEE 802.3az Energy Efficient Ethernet (EEE), Built-in 10/100Mbps Fast-Ethernet PHY with Auto-MDIX, Supports RMII interface or 8-pin GPIO, Support Auto-Negotiation function, Back Pressure Mode for Half-Duplex mode flow control, PAUSE frame for Full-Duplex flow control, Support power management: Wake-on-LAN, ARP/NDP Offload, Supports GPIO, wakeup frame, link status change, and Magic Packet events for remote wake-up, Support TCP/UDP/IPv4 checksum offload checking and generating EEPROM Interface Supports 128/256/512 bytes (93C46/93C56/93C66) of serial EEPROM (for storing USB Descriptors), 93C46/93C56/93C66 auto-detection