Acer XB270HU bprz 27-inch WQHD NVIDIA G-SYNC (2560 x 1440) Widescreen Monitor Acer XB 27" monitor features 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 blazingly fast 4ms response time deliver ultra-smooth motion scenes enhances the in-game experience. No matter how fast-moving the action is, transitions are rendered smoothly without the annoying effects of smearing or ghosting. Signal Inputs: 1 x Display Port & 5-USB 3.0 Ports. Customer Service Team @- 1-866-695-2237. For troubleshooting and Installation Instructions.  Please see the attached (pg. 1-5)