my keyboard is typing what I have written before.

I have a Razer Anansi MMO keyboard. My keyboard repeats what I've typed before. At first I thought it was a virus on my computer. But I noticed that when I press the FN and ALT GR keys on the keyboard, it is typing. When I press this combination of keys, the red M mark blinks on the keyboard and it rewrites what I typed. If I don't have a feature of this keyboard, is there a virus on my computer? Edit #1: For example, he rewrites a sentence I wrote 2 minutes ago. I was very scared when I first encountered it, but after I uninstalled the razer synapse application from my computer, it did not happen again. Is there such a recording system in razer keyboards? he was rewriting the sentences I had written. The things that the keyboard typed automatically were different sentences I typed a minute or two ago. Edit #2: When I press any key on the keyboard, don't let me type the things I had written before, the keyboard was starting to type again. I am very worried now. i hope this is a feature of the keyboard and i hope my computer has not got a virus. Edit #3: @Razer.Caziel @Razer.Speedcr0ss @Razer.Lauriat please help me