Summary: I took the chance that ordering this, based on the "users also bought" advice, would work .. because there's no indication i could find that this ram type was suitable for the Lenovo E545 laptop.. Am happy to report it's perfect for that computer. Win7Pro under 8Gb flies ...
Summary: I purchased this RAM for my MacBook Pro (2010), and when I installed it I immediately starting getting kernel panics and system crashes. I removed the RAM, made sure it was clean and the sockets were clear, reinstalled the RAM in the opposite slots, and still had problems. Bad RAM. So I returned it and was quickly refunded my money. Unfortunately they were out of stock so I had to ultimately purchase from someone else.
Summary: Among many other thins, the most valuable point of this product is that is original or genuine, for the price you get an excellent memory which works great, comes with a small instruction paper and a warranty for lifetime which I don't end to understand. Above all it came on time and well packaged, although the package seemed kind of exaggerated but at least it was well protected. The pictures shows a different ram I guess because mine is blue.
Summary: Shopped around and this was priced very fairly. Installation took about 5 minutes, mostly because I couldn't figure out how to get the back off of my new laptop (sure helps when you read the instructions!). Just plugged it in, the laptop recognized it and away I went.