Samba 2.0/2.1 client is an addon for MiXplorer file explorer v6.32.8+.
Download MiX from XDA store.
You don't need this addon, if you have installed MiX Silver.
If you want to disable samba 2.0, set 'smb1=true' in the advanced properties of the bookmark.
If there is any issue, please send me an email at email@example.com.