Hi
NO default password is set when the switch is new.
The default configuration is quit simple:
One default Vlan (Vlan1) with IP DHCP enabled on this Vlan, and it has 2 users built in: Manager & Operator with NO password set but you can configure other user names (Optional).
If you have a password already set on this switch, and you have physical access to the switch,
press and hold the Clear button (on the front of the switch) for a minimum of one second to clear all password protection.
You can also use the Reset button together with the Clear button (Reset+Clear) to restore the factory default configuration for the switch. To do this:
1. Press and hold the Reset button.
2. While holding the Reset button, press and hold the Clear button.
3. Release the Reset button and wait for about one second for the Self-Test LED to start flashing.
4. When the Self-Test LED begins flashing, release the Clear button
This process restores the switch configuration to the factory default settings.
You can have a look on the following link that explains with pictures how to do so:
ftp://ftp.hp.com/pub/networking/software/Security-Oct2005-59906024-Chap02-Passwords.pdfGood Luck !!!