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The Raptor M40 by Corsair uses an Optical sensor from Avago, specifically the ADNS-3090, providing a DPI/CPI range of up to 4000dpi. This results in a tracking speed of 60ips, and a maximum acceleration of 20g. It uses a USB connection with a 1.8m braided cable.
Corsair Raptor M40 is designed for gaming performance. A powerful gaming-tuned optical sensor, fast response time, extra-large PTFE glide pads, and a high-mass scroll wheel put you in command. Customize it to your play style with the adjustable weight system, and seven programmable buttons put macros and other critical gaming functions just a click away.
Instant DPI switching lets you toggle between high sensor resolution for fast motion, and low resolution for super-accurate aiming. And since serious gamers play for hours at a time, the M40 has a comfortable right-handed design with textured and soft-touch surfaces.