From Ian Page:
Mactracker provides detailed information on every Apple Macintosh computer ever made, including items such as processor speed, memory, optical drives, graphic cards, supported Mac OS versions, and expansion options. Also included is information on Apple mice, keyboards, displays, printers, scanners, digital cameras, iPod, Apple TV, iPhone, Wi-Fi Cards and Base Stations, Newton, and Mac OS versions.
What's new in this version:
Version 7.1 marks the debut of Apple's speaker models to Mactracker's database. This release also includes the latest Apple hardware, the ability to search by serial number, as well as the Electromagnetic compatibility (EMC) number for recent models.