You did not list the model number but based on the MB I am guessing you have an Inspiron 5537. Base on that the total RAM that Dell lists in the specs is 16 GB. And the most compatible is Crucial which you can find here.
I have a DELL Laptop that's running on  Intel Core i7 4500U. I want to upgrade the RAM. At present I have a 8 GB RAM. Could you please suggest me the maximum RAM supported for DELL 019RG3 A00. Also suggestions on which brand of RAM to use for the upgrade would also be very helpful. Note: CPU-Z screenshots attached for more information. [IMAGE]   [IMAGE] [IMAGE]  
DELL 019RG3 A00 Motherboard - RAM Upgrade