While I raise a Taiwan model, firmware 521, but the transmission rates are underground. I have fortunately an EVO 840 and V300 with 505 firmware to compare. The thing did not work, because you can stay at a conventional plate. Kingston has in a US forum now admitted that the V300 is now fitted with asynchronous instead of synchronous NAND gates. Other technology, significantly less power, itself name - for me deliberate fraud!