回複:Thank you, but my 485 receipt address is POBox 851488-Dept
No, It's a CSC address (I got transfered from CSC to TSC). But the address on my 485 RFE notice is a TSC address, it's not the address to which I mailed my EAD application.
IMO, EAD application is a separate application although it's based on pending 485, so will not necessarily be processed by same department.