NASA4D This is most often seen in graphics programs where the menu bar is constantly in 640-pixel resolution and the working area's mode can be changed depending on the user's needs. The IIGS has ports for external floppy disk drives, two serial ports for devices such as printers and modems (which can also be used to connect to a LocalTalk network), an Apple Desktop Bus port to connect the keyboard and mouse, and composite and RGB video ports.|Sony Alpha A99