The file extension .rar indicates a compressed archive, similar to a .zip file. Windows 7 does not natively open .rar files without third-party software.
When looking for drivers for such hardware, it is generally recommended to search for the specific chipset model (e.g., "Ralink RT3070 Windows 7 driver") rather than just the brand name "WifiSky" to ensure you get a stable, updated driver [2]. WifiSky 2000mw Driver For Windows 7.rarl
: Even when authentic, the "2000mW" claim was often a marketing exaggeration. Running the driver at maximum "TX Power" in Windows 7 frequently caused the USB port to overdraw power, leading to the infamous "Blue Screen of Death" (BSOD). Modern Context The file extension