Purchsed for 55, including shipping. Price is firm. 1 month old, never used. Purchased it thinking it could work for Apple computers. Here's the description from the website: The USB32HDES Slim USB 3.0 to HDMI Adapter turns a USB 3.0 port into an HDMI output with 1920x1200/1080p video support. The adapter minimizes clutter with a slim design that seamlessly blends with your video cable - an ideal space-saving solution for multi-monitor applications on Ultrabook™, laptop, or desktop computers. Functioning as an external graphics card, this USB to HDMI adapter provides a convenient way to add multi-monitor capability to a USB 3.0-enabled desktop or laptop computer (optimal performance from USB 3.0, backward compatible with USB 2.0). To save space while travelling, this ultra-portable USB to HDMI adapter features a lightweight, small footprint design that fits easily in a laptop carrying bag. Leveraging the high-bandwidth (5 Gbps) SuperSpeed USB 3.0 interface, the adapter delivers smooth, high-definition content to your HDMI display/projector. The adapter can be used to mirror your primary desktop, showing the same image on each display, or to extend your desktop to double your workspace and increase your productivity.