Razer Mouse Dock Chroma (RC30-03050200-R3M1) - Razer Chroma RGB enabled with 16.8 million color options, Anti-slip base, Dimensions: Length x Width x Height 2.77 inch x 1.80 inch x 1.53 inch, 70.4 mm x 45.9 mm x 38.9 mm, Approximate weight: 1.8 oz / 51 g, Connectivity: USB-A port for mouse dongle, USB 2.0 Micro-B port - provides connection to PC for dongle and charging