USB100FX features: USB 2.0 to Fast Ethernet controller chip 100M fiber USB 2.0 PHY and controller integrated on a chip compatible with USB 1.01.1 and 2.0 specifications Support AutoDetach saving when the Ethernet cable is unplugged from the USB host separation Compatible with IEEE 802.3x 100BASE-FX Integrated LC optical interface the transmission distance 25 km Support twisted pair crossover detection and auto-correction (HP Auto-MDIX's) Embedded SRAM RX / TX packet buffering Supports IPv4 / IPv6 packet checksum offload engine to reduce CPU load including the IPv4 IP / TCP / UDP / ICMP / IGMP & IPv6 TCP/UDP/ICMPv6 parity check Supports full-duplex operation IEEE 802.3x flow control and half-duplex backpressure flow control Supports two VLAN ID filter receives VLAN tag (4 bytes) you can peel or preserved Supports Wake-on-LAN functionality Support MS Windows 95/98/ME/2000/2003/NT/XP/Vista/Win7/Win8 Linux