Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Works Great, and at High Altitude

I bought this microdrive a year ago for my new Nikon. I guide on adventure travel trips and wanted a way to store a bunch of high resolution photos. I have not regretted the purchase one bit. I have used it often at high altitude and in sub zero weather. How high? Base camp at Kanchenjunga, Nepal, the third highest peak in the world, 18,500 ft. And, on the top of Kilimanjaro, 20,000. The drive is slower at those altitudes, but then again, it was below zero. The first time you start up the camera in very cold weather, it SEEMS to get a little longer to fire up the microdrive.My drive needed formatting. I read somewhere that its better to do it attached directly to the computer. So, I plugged the drive in a memory adapter plugged into a USB port of my computer. Worked like a charm.