I head to crucial.com and get what they offer. I'm guessing you want to not only check what you offered but look at the other dozen RAM parameters. Sorry but I find most folk won't do that.
I bought a Asus S400CA laptop recently. The laptop seems to has an integrated DDR3 4GB 1600Mhz ram with CAS 11 11 11 28 as per CPU Z. It seems there is one more slot for RAM module in the laptop. I am planning to upgrade with another 4 GB.
Unfortunately the only options that I have is
Transcend JetRam DDR3 4 GB 1600 Mhz CAS 5-6-7-8-9-10-11
G.Skill DDR3 4 GB Laptop RAM 1600 Mhz CAS 11-11-11-28
Which one among these is compatible and a better choice?