Review on 📷 QUMOX SD to CF Memory Card Adapter Reader: Wi-Fi Enabled for SDHC, SDXC, and WiFi Cards by Matthew Nunez

Glad I ordered two of these; One was junk right out of the box and the other works perfectly. If only I could get a good one I would write a 5 star review now; If I had only gotten a bad one I would rant and swear by a 1 star rating. Like so many other things electronic, this is Russian roulette whether you win or lose. When they arrived I started them. through several extensive read/write tests. Two different Transcend SD cards were used: 32GB 600x and 16GB 300x. Transfer rates were excruciatingly slow, resulting in a 15% corruption rate; and at some point really strange, but all the pictures on the card turned into empty folders with oriental names. I dismissed the first adapter as hopeless and tried the second. This adapter took everything I threw at it and picked it up quickly with no corrupted files. I set it in Canon 7D for rate of fire; and while not as fast as a good CF card, the adapter/SD card handled 8 fps quite well. If both adapters were as good as the second one, I would recommend them to everyone. UPDATE: 02/11/2020: I've found that although read/write and recognition are error free in this adapter and the adapter in a card reader plugged into the computer, about two thirds of our SD card collection, these cards are NOT recognized by ours two 7D cameras; and also, some cards work in one chamber and not another; And sometimes the card connects and works fine, and the next time it doesn't connect at all. My only reason for buying this adapter was so we could use our SD cards in 7D cameras; Currently, about one in three will permanently connect and work. SD cards that are plugged in work great. and 64GB.