How to Recover from a Lost Password for AP4424 Switch ?

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We can use a local computer (a computer that connects to the Rack ATS or other devices through the serial port) to access the control console.
1. Select a serial port at the local computer, and disable any service that uses that port.
2. Connect the serial cable (APC part number 940-0144A) to the selected port on the computer and to the configuration port at the Rack ATS.
3. Run a terminal program (such as HyperTerminalÆ) and configure the selected port for 9600 bps, 8 data bits, no parity, 1 stop bit, and no flow control.
4. Press ENTER, repeatedly if necessary, to display the User Name prompt. If you are unable to display the User Name prompt, verify the following:
ñ The serial port is not in use by another application.
ñ The terminal settings are correct as specified in step 3.
ñ The correct cable is being used as specified in step 2.
5. Press the Reset button. The Status LED will flash alternately orange and green.Press the Reset button a second time immediately while the LED is flashing to reset the user name and password to their defaults temporarily.
6. Press ENTER as many times as necessary to redisplay the User Name prompt, then use the default, apc, for the user name and password. (If you take longer than 30seconds to log on after the User Name prompt is redisplayed, you must repeat step 5 and log on again.)
7. From the Control Console menu, select System, then User Manager.
8. Select Administrator, and change the User Name and Password settings, both of which are now defined as apc.
9. Press CTRL+C, log off, reconnect any serial cable you disconnected, and restart any service you disabled.
10. Select Accept changes .