I need a reliable USB Serial 2 adapter to collect data from my solar system components in a hot country and work environment surrounding the clock and seven days works a week. /365. They're expensive, but they deliver and fit my demanding application. Before I bought them, I used regular chip "FTDI cables", they worked. but it hung and hung from time to time, it might be once a day or once a week or twice a day or once every two weeks - for my application that is not good enough and unacceptable. So yes, Victrons are expensive, but they don't freeze or freeze, and for me the price is right.