I've tried many hubs to connect more than two hard drives, all the hubs I've had were powered but none of them served more than two hard drives at a time Transmission. I bought this HUB without high hopes, but when I did the stress tests I connected 5 external USB hard drives. Luckily he managed to use all 5 hard drives with simultaneous transfer without any problems. This is amazing, I've tried 4 different brands of hubs before and none of them worked for me.
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