How to tell fake true Logitech MX510

Users questions: BENQ Optical with the original 2 years, and finally to the laid-off age, like another MX510 (because most of the CS). However, what many people say the market is fake, so please help how to distinguish heroes MX510 is true
Experts answer: package parallel mainstream division of work package is no formal quality assurance The bulk, parallel imports is no formal quality assurance in the region boxed, licensed is to have formal quality assurance of the boxed region. The mouse on the bar code can check that, if it is false and let him give you your money back and then pay the money. I use MX510.
  • This information provided by the users.Thanks!