The USB to RS232 TTL base module provides the best and convenient way to connect your RS232 TTL Devices or demo card to your PC via the USB port PORT. Supports the following Windows operating systems:Windows 98SEWindows MEWindows 2000 SP4Windows XP SP2 and above (32 and 64 bit)Windows Server 2003 (32-bit and 64-bit)Windows Server 2008/2008 R2 (32-bit and 64-bit)Windows Vista (32-bit and