I tryout a experiment 4 years ago with a dell m6700 cpu first avc fan then delta fan for my m6600 but i forgot to do the "see the different temps after sacrificing the m6600 cpu fan connector" before do this mod😅, what i remember at that time the fan able to go 100% fan speed at time of how high the fans can go. it able to turn on and off normally. now currently the fan hasn't gone up 100% as I now I'm using a different thermal paste gc-extreme and not the mx 4, and put thermal pad to send some of the heat from cpu to the palm rest. i haven't post about this mod cause i didn't have proper test results and its currently using optimus with p4000 cause the amd m6100 gave up so temp are different vs the time i was testing it. the cpu is i7-2760qm. if possible if the fan can fit and the holes align on your m4600 if u want to trying out the experiment on m4600 but there risk if not done right. as i wasn't using m6600 as my main laptop. i was able to solder the cables to the position where the delta fans old cables suppose to as the delta cables had color marking nearing the solder pads for which cables go to where. If u do try it make sure the fan can turn on n off/lower the fan rpm as my first test on the delta fan i had to go adjust the solder of the cable to able to turn off/sends commands to lower the rpm properly when the temps goes down enough.