brand new Microsoft Wireless Optical Desktop 3.0 (box not open), $40
http://www.futureshop.ca/catalog/proddetail.asp?logon=&langid=EN&sku_id=0665000FS10048352&catid=&CMP=EMC-prmo_0805_generic
http://www.microsoft.com/hardware/oempartners/ProductDetails.aspx?pid=031
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