Thank you friend, I wanted to find something related to my card and it is correct you gave me the solution since being my card the cm model at the end is Oem so it only supports 8gb of up to 1666mhz and I know that it accepts until that amount of the bus because I tried two corsair of 4gb 1666mhz and grabbed if problem and worked dual channel thanks for your input
If what happens is that they gave it to me, and they didn't give me a manual, that's why I'm looking for the model since it's that one and I can't find the model anywhere and the h61h2-m2 model if I find it but it doesn't belong to mine since As I said, mine ends in cm but ok I am going to buy two 8GB ddr3 memories or try one if I grab it I buy the other