
I've tried every imaginable combination of formats and card sizes. Write speed STARTS quickly, but then slows down by 1 or 2 MB/s. No matter what format or cluster size (from 4K to 128K) I've tried, the results are exactly the same. I have an OLD USB 2.1 Sansdisk that is literally 12x faster in write speed. After literally EVERYTHING ADATA does, this is the worst purchase I've made this year. After some research I found that the slow speed is due to the write cache being too small so it stops after the first 100MB or so. when I went to pull it out of the computer. He really started smoking. What "hot" bullshit!

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