Whether the user name and password configured on the Huawei switch are case sensitive？

Hi Sprout,
Passwords on all switches are case-sensitive, and user names on most switches are case-insensitive.  A few switches, such as S9300 are case-sensitive. However, for user security purposes, even on such a switch, you cannot configure multiple local users with the user names that differ only in uppercase or lowercase. For example, after configuring ABC, you cannot configure Abc or abc as the user name.