From the manufacturer

A Minimalist Advantage
G512 is a high-performance gaming keyboard featuring Romer-G Tactile mechanical switches. Advanced gaming technology and aluminum-alloy construction make G512 simple, durable and full-featured.
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Tactile Mechanical Switches
Romer-G Tactile key switches produce a discernible bump at the point of actuation, ensuring confidence and precision with every key
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USB Passthrough
Additional, dedicated USB cable connects passthrough port to its own input for full power throughput + data speed. Plug in a device to charge or a mouse to charge adversaries, without missing a beat.
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Complete Your Ultimate Gaming Setup
Combine the G512 keyboard with other gaming gear from Logitech G for a complete and completely advanced setup meticulously designed for serious gamers.