Lights up the room, even when computer off.,
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This review is from: Perixx PERIMICE-201P B, Wired PS2 Optical Mouse - 3 Button - 800dpi Resolution - 1.5m Cable - Black (Accessory)
Does what a computer mouse is supposed to do, but otherwise I suggest it is not for use on a bedroom computer. Even with the computer switched off, this produces a bright blue, pervasive light.