If there is one common issue many multiplayer online (MMO) gamers face (especially MMORPG ones), it is the speed in which they can use a skill when using the keyboard. This happens when both the skill keys and the movement keys are both on the keyboard and there is boss fight which requires lots of movement.
With this in mind, many computer peripheral makers have released mouse with more than your standard left and right buttons. But sometimes even this is not enough as games such as World of Warcraft or Final Fantasy 14 can have a player with over 10 skills and counting.
Thus these companies have released what is called a MMO Gaming mouse with more keys are the side of the mouse. One such company is Logitech with their G600 MMO Gaming mouse and resident pc gamer Kenneth Wong shares his experiences with it.