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Definitely useful accessory for your camera regardless if you have dual SD, dual XQD or mixed (i.e. D850) one. High speed USB3 transfer rates makes it quick to transfer even bulky RAW images. SD Slot has "click lock" mechanism, so it secures inserted card as well as protects from inserting upside down and bending reader contacts, which is common issue with most of the reader adapters. XQD card plugs mostly similar to CF, so there is no need for click mechanism. Overall construction is durable (even for plastic enclosure). You might find 3rd party (less known brands) similar adapters available all around, I have one for CF/SD/microSD which came with USB C adapter I'm using now with this one, but most of them have technical limitations for simultaneous slot use. This one operates both slots the same time.So far, this is single reader tool for my set of D850, D500 and D90. An addition of a USB type C cable would have made the data transfer even faster, but they're easily available and are inexpensive.
Approdato al lettore Sony dopo un lettore di Amalink ed un lettore Lexar , ambedue hanno dato forfait il primo dopo un brevissimo periodo il secondo circa 1 anno di utilizzo, al momento nulla da eccepire su Sony, penso che avrei dovuto rivolgere la mia scelta subito al lettore Sony in quanto le XQD sono di progettazione Sony.