Dell U2417HWi UltraSharp Wireless Monitor (210-AIHS-CSB) - Resolution: 1920 x 1080, Contrast Ratio: 1000:1, Response Time: 8ms, Aspect Ratio: 16:9, Brightness: 250cd/m², Refresh Rate: 60Hz, Connectivity: 1 x Dual Screencast with WiFi Direct, 1 x HDMI, 4 x USB 3.0 ports - Downstream (3 at the bottom, 1 at the back with battery charging), Built-in Devices: USB3.0 Hi-Speed Hub (with 1 USB upstream port and 4 USB downstream)