Fujitsu M520 USB Mouse White Set of 2 P/N: CP664644-01 Rev.: 02, 04 These were included with Fujitsu desktop PCs purchased approximately 5-10 years ago. I used other mice, so these have been stored unopened in their boxes. The packaging has some age-related and handling-related dirt and scratches. For those who understand that these have been stored for a long time. Shipping via Takkyubin Compact.