9 key rollover. Use the Key Rollover Test to check your keyboard’s NKRO and ghosting support. The following online key rollover test makes it easy for you to verify specifications from manufacturers. Keyboards that lack full rollover See full list on keyboardtester. Key rollover is the ability of a computer keyboard to correctly handle several simultaneous keystrokes, often important in gaming as well as for testing rapid key pressing and reaction time. Start a rollover test by pressing and holding two or more of the A-Z or 0-9 keys and then press and release the shift key. Key rollover is how many keys you can press at the same time. A keyboard with n-key rollover (NKRO) can correctly detect input from each key on the keyboard at the same time, regardless of how many other keys are also being pressed. io Rollover. Test your keyboard's N-Key Rollover and upgrade your typing experience with our online tool & avoid keys ghosting and blocking in the future! Our key rollover test will help you examine your NKRO rollover on your keyboard, take the test and check out!. You can try out various key combinations and test how many keys your keyboard can handle at once. Press multiple keys at once and instantly see how many inputs your keyboard can register accurately. Then press all the keys shown in red and orange one at a time to see if all combinatations of three or more keys are registered. The term key rollover refers to the number of keys that can be simultaneously registered by a keyboard. zwnt yqtjjx cjsnpgm chgrg znrlsw uvfdpstvx dcvh sad kcu wgcoe