Instruct: Classify Amazon reviews into positive or negative sentiment
Query: The proper tool

I was a little hesitant to purchase this AC adapter because the description did not give any of the specifications. The manual that came with our Olympus D-490 camera warns that we cannot use the Olympus 3 amp adapter, so I was hesitant to order this one without knowing more. I took a chance since this was the only one I could find on Amazon, and luckily this was the one needed. The specs, for those who need to know are as follows: Class 2 power supply with Input - AC120V 50/60Hz 0.3A and Output - DC6.5V 2A