The Macintosh Classic II, also known as the Macintosh Performa 200 replaced the Macintosh SE/30 in the compact Macintosh line on October 21, 1991. Like the SE/30, the Classic II was powered by a 16 MHz Motorola 68030 CPU and 40 or 80 MB hard disk, but in contrast to its predecessor, it was limited by a 16-bit data bus (the SE/30 had a 32-bit data bus) and a 10 MB memory ceiling. There were two Classic II cases. Later models came with a new speaker grille on the left side for enhanced sound (as pictured).