Microsoft Comfort Mouse 4500
Microsoft Comfort Mouse 4500 is currently not available.
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Tech specs

Required Input Device USB port
Required Operating System Windows 7, Vista, XP (excluding Windows XP 64-bit)
Other System Requirements Two AA alkaline batteries required (included); Internet access required for certain features. Local and/or long-distance telephone toll charges may apply. To add 4-way scrolling, download Microsoft IntelliPoint at https://www.microsoft.com/hardware/en-sg.