GK-KM3100 Desktop Keyboard And Mouse Combo Set with reliable USB connecter, convenient USB connecter for both keyboard and mouse port. Just plug and play! No set-up needed in advance. Spill-Resistant Design Keyboard, the spill-resistant design protects the keyboard from spilling drinks. GIGABYTE Precise Optical Tracking System, equipped with GIGABYTE precise optical tracking system, the mouse is so responsive and easy to control. The 800 DPI mouse is optimal for users. Ergonomic Design for Both Hands, both keyboard and mouse stay true to one of GIGABYTE's core concepts - ergonomic design. The mouse is symmetrical so that is ideal for both hands. Laser Engraved Keycaps, laser engraved keycaps ensures durable and long-time usage.