Code named "Aladdin" and "Chablis", the Macintosh SE was originally billed as Apple's mainstream business computer. The SE marked a number of Macintosh firsts: It was the first Mac equipped with a cooling fan, an internal hard drive (optional), an ADB keyboard jack and an expansion slot -- no previous Mac had seen any of these features! Additionally, the Macintosh SE was the first Macintosh to possess the corporate gray color (previous Macs had been beige). Current used market value of a 2/20 configuration: $40