Fosmon HD1823 Mini DisplayPort (Thunderbolt) to DVI Male to Female Adapter, White Input: Mini DisplayPort (Mini DP or mDP)/ThunderboltTM (Male) x 1 Output: DVI-I (Female); a separate DVI cable is required (not included) Supports DVI-I high definition resolution up to 2560 x 1600 @ 60Hz Connects from Mini DisplayPort to DVI. This is not a bi-directional adapter NOTE: Adapter only works with laptops with Mini Display Port, please check with your device's output specification before placing order.