Apple Video Cable Adapters

Cable quality varies widely, so trust a cable that is genuine from the manufacturer with the Genuine Apple Video Cables Adapter. Genuine Apple cables have a thicker cable and has a far better strain relief because they are durable and made with great construction. The pins on the connector in the Genuine Apple Cable uses 1, 15, 16 (all GND), plus 23 (USB + 5 V), pin 25 USB Data, and pin 27 (USB data +) giving you the best connection and most reliable return line.

Apple M9321G/B Mini-DVI to DVI Display Adapter
The Apple M9321GB mini-DVI to DVI-D adapter is for use with the iMac (Intel Core Duo), MacBook, and 12-inch Powerbook G4 to convert their mini-DVI connectors to a standard, full-sized DVI-D connector for use with external monitors.