The product just turn on and off the fans, there isn´t speed control. CRAP!!!
Half the price of a US store selling the exact same product and it is working very well. Ordered 2 of these and other items from the same vendor. The fan controllers were in individual anti-static bags in a smaller box. The brackets were slightly bent, but I blame shipping and was able to fix them by hand with no visible damage. As these do not connect to the motherboard, I would like to see the brackets that have a split at the bottom and hold on to the case like a paperclip would to keep them more secure. I am still happy with the purchase and would recommend these. Thank you!