File transfer and access times divided by minimum 3 on my laptop! I handle and walk this trail for some time and no problem. The additional USB power cable does not change and no use on my computer but I think it is provided for a better management of the power supply board (distribution) or for better compatibility for some ordis which n ' would not have enough power on their express card slot. So it's a nice surprise for me because it makes me really 2 USB ports suplémentaires! My laptop is designed for 54mm Express cards, so the only drawback is plug in my USB devices on this card before inserting it in its express card slot to not be bored with the game 2cm I have left. ( this card is in 34mm format, but I do not find any equivalent in 54mm: format that seems to become obsolete and apart from the empty space no compatibility problem)! Frankly saving time is phenomenal and forget this detail that concerns only those equipped with 54mm. Obviously you have to be equipped with 3 USB external drives, but I even noticed a better transfer rate on my USB external drives 2 which I could never theoretical maximum throughput (that is not always the case, but I think it's my laptop which is limiting)
USB 2 I arrived in file transfer time recalling the USB 1 as the size and number of files has increased. I saw with fast and efficient transfer. No one noticed clerical error. Even if a transfer rate means nothing because it depends on a lot of parameters (configuration, OS, equipment ...) indication I transferred to better 25MB / s and often 12MB / s now I switched to 60-66Mo / s with a single USB disk 3, which is the USB the ceiling 2! I reach between 2 and USB 3 drives 100 MB / s. I am far from 5Gb / s possible with this card but my laptop is older (3 years).
