Lenovo ThinkSystem NE2552E Application Manual page 83

7. A security test will be performed. The system location (blue) LED will blink a
number of times between 1 and 12. Enter that number:
8. After entering the correct number, the Recovery Mode menu will re‐appear. To
install an unofficial image use one of the following procedures:
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Hit a key to start the test. The blue location LED will blink a number of
times.
...........
How many times did the LED blink?
 TFTP (for details, see page
 XModem Download (for details, see page
Note: You have three attempts to successfully complete the security test. After
three incorrect attempts, the switch will reboot.
Note: After the test is completed, the switch will be put in low security mode. This
mode will allow you to install unofficial images on the switch. To revert to normal
security mode, you must reboot the switch or press P again in the Recovery Mode
menu.
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Chapter 3: Switch Software Management
83