3Com S7906E Command Reference Manual page 2012

For simple password, it is a string of 1 to 16 characters.
For cipher password, it is a string of 1 to 16 characters in plain text or 24 characters in cipher text.
For example,
"(TT8F]Y\5SQ=^Q`MAF4<1!!".
Description
Use the super password command to set the password needed to switch from a lower user privilege
level to a higher one.
Use the undo super password command to restore the default.
By default, no password is set to switch from a lower user privilege level to a higher one.
Note that:
If simple is specified, the configuration file saves a simple password.
If cipher is specified, the configuration file saves a cipher password.
The user must always enter a simple password, no matter simple or cipher is specified.
Cipher passwords are recommended, as simple ones are easily getting cracked.
Examples
# Set the password to abc in simple form for switching user-level to 3.
<Sysname> system-view
[Sysname] super password level 3 simple abc
Display the password for switching user-level.
[Sysname] display current-configuration
#
super password level 3 simple abc
# Set the password to abc in cipher form for switching user-level to 3.
<Sysname> system-view
[Sysname] super password level 3 cipher abc
Display the password for switching user-level.
[Sysname] display current-configuration
#
super password level 3 cipher =`*Y=F>*.%-a_SW8\MYM2A!!
sysname
Syntax
sysname sysname
undo sysname
View
System view
Default Level
2: System level
the simple text
1-21
"1234567" corresponds to the cipher text