transmission and fonera 2.0n download too slow!

[kivar]

Hi!
i've a fonera 2.0n with attached a hard drive formatting in ext3 with transmission ui interface.. but if i try to download a torrent it's download too low..
the same file download from transmission app from mac have a great velocity..
how can risolve from transmission ui?
the first image is downloaded from mac app
the second image is from transmission ui..

thanks for helping