Hi,

I have a TP-LINK TL-MR3420 board. I have a USB drive attached through a USB hub. I experience very low transfer speeds (approx. 75 KB/s). The USB hub has already been replaced; also an other USB drive has been tried too. (I also have a WNDR3700, which is ar71xx too, but have not experienced any usb problems with that one.)
Where can I look for further problems?

Thanks a lot!