Acer XB0 XB270HU ABPRZ 27-Inch Screen LED-Lit Gaming Monitor WQHD resolution (2560 x 1440) presenting stunning, high quality images with excellent detail that not only enhances users' working efficiency, but creates outstanding visual enjoyment. NVIDIA G-SYNC technology synchronizes the monitor's refresh rate to the GPU render rate providing the smoothest, fastest gaming experience. A rapid 144Hz refresh rate and amazing fast 1ms response time (GTG) deliver ultra-smooth motion scenes enhances the in-game experience. TN panel. Supports 3D Vision and ULMB (Ultra low motion blur). Transitions are rendered smoothly without the annoying effects of smearing or ghosting. 5 high-speed USB 3.0 ports provide gamers a convenient scenario to connect mouse, keyboard, gaming headset and mobile. Plus, there is one USB port equipped with "Battery Charge" for quick charging.