The harddisk ektsernal make a slow internet connection?

Dear all, i have a problem in my office , where in one day…i use a my passport HDE at the office in laptop and at the same time i open internet connection with wifi, all my colleague wich is working using internet conection, say that my HDE my passport is the source of problem that the internet connection running slow. its true what my colleague said, that the harddisk ektsernal make a slow internet connection? i hope i can get the answer and solution from all of you. because this problem annoying me…Thanks before 

Since there’s been no replies, maybe you should try contacting WD’s Technical Support about this. You can do so either by phone or email.

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http://support.wdc.com/contact/index.asp?lang=en