Embedded Linux is a famous, UNIX compatible, open source embedded operating system which ports the Linux kernel to a specific CPU and board installed into the embedded device. Advantech offers Embedded Linux installation CD for x86-based UNO products and supports Fedora Core 3 and RedHat 9.0 kernels. In the Embedded Linux, it features X Windows, browsing (Dillo), PDF viewer (XPDF), FTP (GFTP), IPv6 and software management (RedHat Package Manager) in a 50 MB image size.