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The G9 by Logitech uses a Laser sensor from Avago, specifically the ADNS-6090, providing a DPI/CPI range of 200 to 3200dpi.. It uses a USB connection with a 2m, braided cable. It weighs in at 156 g grams with the cable, has 4 x 7g and 4 x 4g weights and is approximately 109.8 x 80.2 x 38.9 mm (LxWxH).