****thank you!!***The iMouse T1 Desktop Optical Trackball by Adesso is a black wired mouse with a maximum DPI of 800. It features an ergonomic design, side-to-side scrolling, and optical tracking method. With 4 buttons and a compact design, this trackball mouse is perfect for gaming and everyday use on both Mac and Windows systems. Easy to set up with its USB connectivity, the iMouse T1 offers a unique and convenient alternative to traditional mice for those seeking a comfortable and efficient pointing device.