@lurkin : I'm gonna try it tomorrow as soon as I'll. So I'll be able to answer you but I hope so, as well as the Deathadder Black Edition has.
@codplayer : You don't answer any questions. And yes, 4500dpi is really great, but when you have a mouse capable to use 8200dpi, why don't do it ? Because, necessarily, 8200dpi will be more efficient than 4500dpi, so when you have it, use it.
But I'm still wondering if the Ouroboros has an inboard memory and does it work wireless or not ?
Thanks in advance.
EDIT : So lurkin, after trying, it seems she has an onboard memory because I fixed it to 8200dpi on Razer Synapse and when I tried to play with on XIM, the sensivity was absolutly insane while with my old mouse (Deathadder at 2500dpi) the sensivity was just perfect, so I just wanna tell you : "YES"
Now codplayer, if you don't notice any difference between 4500 and 8200 dpi, I advice you to try it, because, me, I did, and I can swear that the difference is notable.
And for potential others who could wondering same questions as me, YES, the Ouroboros works wireless flawlessly and she's lighted, and for others questions, I'm available.