pu port             /dev/ttyUSB0
pu baudrate         38400
pu bits             8
pu parity           N
pu stopbits         1
pu hasdcd           No 
pu rtscts           No 
pu xonxoff          No 

<HP 1920G Switch> _cmdline-mode on
All commands can be displayed and executed. Continue? [Y/N] Y

↓↓↓↓↓↓↓↓ Default password is below, ↓↓↓↓↓↓↓↓
Please input password: Jinhua1920unauthorized

<HP 1920G Switch> system-view
System View: return to User View with Ctrl+Z.

• Username: admin
• Password: <blank>