how to get administrative privilege to change the attributes of a file on a network drive (Windows)

I, logged in as my PC administrator, am getting message Access denied - Z:Docs when trying to attrib +H Z:Docs in Windows command line.

The virtual drive (Z:) is mapped to network location \192.168.0.1sdcard that is a MicroSD card shared by my router device using SMB.

I know this may be a basic question, but show me how I can change the attributes of remote directory Z:Docs ?

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