StarTech.com Mini DisplayPort to Dual-Link DVI Adapter - Dual-Link Connectivity - USB Powered - DVI Active Display Converter - Compatible with Windows & Mac - 1 x 4-pin USB 2.0 Type A - Male, 1 x 20-pin Mini DisplayPort 1.2a Digital Audio/Video - 1 x 29-pin DVI (Dual-Link) Digital Video - Female - B