Apple/Macintosh Performa 6400 PowerPC.....3.8gb Hdd, Mac 7.5.3 OS, floppy drive, cdrom drive, integral 28.8 kbaud modem...a very nice system including a 14" monitor with built in speakers, keyboard, and trakball. One really nifty thing about this system is that the main cpu contains a built-in subwoofer; just excellent for music applications. This system can be upgraded to G3 specs.