High-definition optical engine: 1000 dpi sensitivity for smoother, more accurate cursor control.
Tilt Wheel Plus Zoom : Scroll side to side and zoom in or out effortlessly-ideal for viewing digital photos and spreadsheets.
Plug and play: No software necessary; just plug it into your PS/2 port.
Contoured shape: Enjoy maximum comfort in either hand.

Part Number: PN 953950-0311
System Requirements:
Windows(R) 95, Windows(R) 98, Windows NT(R), Windows(R) 2000, Windows(R) Me, Windows(R) XP, or Windows Vista(R), Windows(R) 7
PS/2 port
CD-ROM drive

Logitech(R) Optical Mouse
Installation guide
CD with Logitech(R) SetPoint(tm) software