LED indicator, green LED indicator is used for correct connection, yellow LED indicator is used for net communication. Built-in function, Ethernet USB dongle helps save system resources through built-in checksum and large send offload support and huge frames. At the same time, it has crossed detection and automatic correction (Auto MDIX), which ensures reliable connection, widely compatible, and easy to install driver. Support for Windows 7/8/10, for OS, for Linux Kernel 3. x / 7 2.6. Not support for Windows RT or for Android. Low power consumption, no external power supply, 3 port USB 3.0 expansion, convenient for your flash drive, keyboard, mouse, camera, printer, HDD, etc.