Cannot connect directly to iMac?

Hi everyone

I tried to Time Machine My Book Live via the router. However it was getting too slow. The estimated time of completion is 4 days! hahah

And during this backup my connection to the internet is so sloooow!

So i dismounted it and plugged it directly into my iMac. However it could not work or write on the drive.

How should i do this? What is a better solution?

4 days is long! And i need my emails and go online. The speed is so slow when connected to my router. And un-usable.

Thank you!

Check the link below for some suggestions on how to improve the transfer rate.