Instruct: Classify Amazon reviews into positive or negative sentiment
Query: How hard is it to match numbers?

I went to the Kingston website, looked up the compatible memory for a Dell computer. Then I went to Google, did a search for lowest price on that part number. Trusted Amazon, so paid a few dollars more and bought from Amazon. When I went to install the 6 identical memory modules I had ordered, I found I had 5 memory modules with the correct part number and a 6th which was physically very different and a very different part number. This is very sad and disappointing that this type of an error could occur.The 5 modules worked flawlessly which is typical for Kingston, though I am still disappointed that the memory does have the low rent Made in China label on it.