Your question is a little hard to follow but if your asking if it is always safe to remove hardware in 7 the answer is no.
This behavior is handled just like in other versions of windows, it's just a little harder to find.On the task bar you will see a little arrow, click this arrow and a small menu pops up, you will see a small icon that looks like a greenish USB plug with a green check mark next to it, whem you click this a list will appear just select the device you want to remove.