说明：  Serv-U是一种被广泛运用的FTP服务器端软件，支持3x/9x/ME/NT/2K等全Windows系列。可以设定多个FTP服务器、限定登录用户的权限、登录主目录及空间大小等，功能非常完备。
(Serv-U is a widely used FTP server-side software, such as support for the entire Windows family 3x/9x/ME/NT/2K. Can set up multiple FTP servers, limit the logged-on user permissions, log home directory and space size, function very well.)