The Macintosh Classic was released in an attempt to create an affordable computer that could still be a good machine. At the time of its release, a stripped-down version without a Hard Drive cost $999. However, the machine was vastly underpowered: Although it had a fresh new case, the machine was nothing more than a Mac Plus or SE with a High-Density Floppy Drive, hence the "Classic" designation. Another interesting note is that this machine (and the Classic II that followed it) did not have a physical brightness dial; this was left out to decrease cost. These were the only machines in which the Brightness Control Panel was needed. If you turned the brightness all the way down and shut either machine off, it reverted to the default setting at reboot. The Classic was also the first and only Mac to have a secret disk etched into its ROM; holding down Cmd-Opt-X-O at startup made the machine boot from the ROM Disk. (Very nifty feature if you come across a Classic and want to see if it works.) The Classic was replaced almost two years later.