EAD renew after AC21. Which service center?

[Mendota]

I used AC21 early this year and currently working on EAD.

I am going to renew my EAD very soon.

But which service center should I submit the application to? Previous one (NSC which I filed for I-485) or current one (CSC-which I am currently living in.)

Thanks!
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[ginnu]

I used AC21 early this year and currently working on EAD.

I am going to renew my EAD very soon.
-------- file 6 months advance
But which service center should I submit the application to? Previous one (NSC which I filed for I-485) or current one (CSC-which I am currently living in.)
------------------where I-485 was filed
Thanks!
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