Not recognized 2 TB hard drive

I have two 2TB hard drives connnected to my Media Center computer, But it will only Recognize one of them. Can two of the same type hard be connected to one Computer.

This a Windows issue this post explains what to do http://community.wdc.com/t5/Other-Externals/Problems-with-having-more-than-one-USB-2-0-WD-2-TB-Elements/td-p/285724

Joe