Hi all!

I have a big problem with RB711 as shown in the header. I have read lot of topics, but I did't find this problem and the solution!
I have 80pcs of RB711 all of this a works properly, but the last shipment includes a bug / factory defect or something like that.
The last few pcs are seriously Producing Collision on mikrotik RB450G Router Ether Port,After Reboot the Newly Installed 711 The Collision is Problem is Rectified . But After 10-18Hrs The Problem is Repeate.
Have anybody a solution?

THX in advance,
Abhishek M