I purchased a viper v2 pro from amazon 5 or 6 months ago, and the dongle stopped working. I realized I still had a warranty by using THIS very website and entering the serial number. when contacting razer customer support I was told “nothing could be done because I didn’t buy direct from the razer website, but instead a reseller” and when politely asking to speak to a manager I was told there is no one available, and they may not even contact me, and if they do, they will just re-explain the process again. I own many razer products of which I have never experienced any major issues or had any serious complaints to write home about (and yes I've had problems with other products), however the service I received is absolutely horrible from this company.  If you contact literally ANY major tech manufacturers about in-warranty hardware replacement they will tell you they can do either 1 of 2 things, send you a replacement part under warranty regardless of where it was purchased, or charge you out-of-warranty and send you a replacement part. I had to practically beg the person on the phone for 5 minutes for an alternate solution just to hear that I could buy a replacement on the website, however it was sold out. which mind you this product has been sold out consistently because this is a KNOWN problem and people are scalping them. I understand it wasn’t purchased directly from razer but I spent $170 simply on a wireless mouse that isn’t wireless anymore and razer has no problem telling me to kick rocks. I will never buy products from this company again. Hope this helps.