Extra Buttons?

Dreema

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Registered
Mar 2, 2021
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I saw a device at Gamestop that gives you extra buttons on the back to map to whatever you want. Does anybody use one of these? What's it like. Very tempted to buy one.
 
Avoid these at all costs. I've had them at all price ranges and they tend to be bulky and/or badly placed so you're always pressing the buttons accidentally.