Given an Amazon customer review, write a title for the review. The preferred titles are under fifteen words.

[EX Q]: I purchased this for my HP Elitebook 8540W laptop to increase the memory from 8G to 12G. There are two additional memory slots on the back of the laptop. Takes seconds to open and I found one slot already had a 4G 204-pin RAM, so I purchased this one that has the matching speed of the one I have. It arrived within two days, and I plugged it in. Worked perfectly!
[EX A]: Works great with my HP Elitebook 8540W

[EX Q]: I had a mouse that was failing and after many reviews I came across this one. After getting it I fell in love with it, it fits perfectly and is so smooth to use. I highly recommend this and I'm glad it got good reviews so I could get it for myself.
[EX A]: Microsoft mouse...if you have to get one, get this one!!!

[EX Q]: The kindle was to replace a defective one I owned. It runs very well, except the battery only last half as long as the replaced kindle. Besides the battery life and always having to charge it every day, I enjoy my kindle very much. I'm not looking forward to traveling with the battery life.
[EX A]:
Battery life is short!!