Most driver downloads are compressed in .rar (Roshal Archive) format to save bandwidth. FreeRAR refers to free tools like 7-Zip , PeaZip , or WinRAR’s trial version that can extract .rar files. You cannot install the driver without extracting the setup files first.
Some variants use the Realtek RTL8152b or ASIX AX88772 chipsets, which usually have better built-in support in newer versions of Windows. Driver Installation Steps jp108 no 030818 usb lan driver freerarl portable