Every model and version of Beats has slightly different packaging. This can make it hard to identify certain fakes.
The trademark logo is simply the letters TM, printed in a smaller font. Some versions of the headphones don’t have the trademark logo on the front or back, but on the manual that comes with the headphones. The EP lineup of headphones is not trademarked, so it won’t have a trademark logo. They are the cheaper lineup of headphones though, so they’re rarely counterfeited.
On the Studio and Solo boxes, the highlights created by the lights are on the top of the ear on both the left and the right.
It is really hard to reseal fake headphones in the plastic casing that real Beats come in. This is because most counterfeiters don’t have access to the binding machines needed to seal something in plastic.
This is an exceptionally common element amongst counterfeit headphones. Many fake headphone manufacturers put all of the effort into making the headphones look right that they forget about things like the carrying case. Counterfeiters will often take 2 broken halves of the carrying case and glue or knit them together to refit a carrying case. This makes the crease for a fake pair look different than a real one. On a real pair, the padding on the crease will be identical to the rest of the case.
Beats never prints the serial number on the left ear. However, just because the number is on the right doesn’t mean that the headphones are automatically real. If your serial number is on the right, try registering it to see if the number is valid.
If you bought used headphones, it may simply have already been verified. The seller should still be able to show you the verification paperwork or their online profile to prove it though.
You aren’t really putting your computer at risk by plugging in fake headphones. The odds that they’re going to be infected with malware or viruses are really low.
If they’ve already registered the headphones, they should have the registration paperwork or a link to a personalized profile with the headphones listed.