Notes about Operation44Software (RTR-500W for Windows)Operating EnvironmentCompatibleDevicesBase Units: RTR-500NW, RTR-500AWRemote Units: RTR-501/501L, RTR-502/502L, RTR-503/503LRepeater: RTR-500Compatible OS Microsoft Windows 7 32/64bit EnglishMicrosoft Windows Vista 32bit EnglishMicrosoft Windows XP 32bit (SP2 or above) English*Operation under a 64bit OS is not guaranteed.PC/CPU A Stable Windows Operating EnvironmentMemory A Stable Windows Operating EnvironmentHard Disk More than 30 MB of free space (More free space is necessary for data)Monitor SVGA (800 x 600) more than 256 colors