New Microsoft Pro Intellimouse Ordinary is not an optionA modern work and gaming-ready take on our classic fan-favorited wired mouse design with an upgraded tracking sensor more responsive buttons and distinctive detailsQuickly and efficiently complete demanding tasks with two customizable thumb buttons and a middle clickNext-level durability thanks to improved top key actuation lifecycle for intense repeated use - plus improved skirt abrasion performance for ultra-smooth low-friction responseErgonomic design for hours of work and gaming comfort plus an upgraded braided cable for tangle-free performance and side key texture for improved tactilityNo waiting Plug in the fast wired USB connector without waiting for Bluetooth to pair or searching for a dongle