I purchased a Sandisk Ultra 64GB flash drive, but it is bad. The speed for reading is 35 mb/s, and the speed for writing is 7-8 mb/s in both USB2 and USB3 ports. I already own a Sandisk Extreme usb3 flash drive, which is gorgeous in every aspect, but the dimensions are too enormous. Attempted on many systems. There was no sign of it in the WD TV media center. I strongly advise against purchasing Sandisk Ultra; instead, brand devotees should choose the Sandisk Extreme USB3, which is incredibly quick.
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