See Maintenance mode on/off procedure on page 4-10 section.
5. Click Start > Programs > Accessories > Communications >
HyperTerminal to boot up terminal software.
6. The Connection Description window is displayed. Enter telnet1, and
then click OK.
7. Select TCP/IP (Winsock), enter < IP address > in the Host address,
and then click OK.
< IP address >:IP address for the target switch module. See 
Internal IP
address setup procedure for switch module on page 4-18 section.
8. The login prompt is displayed in the terminal.
Figure 5-151 Connecting to 8Gb FC switch module
9. Enter admin as login name, and then press Enter key.
10. Enter password as password, and then press Enter key.
11. Confirm that the command prompt is indicated.
12. Enter usbstorage -d, and then press Enter key.
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Replacing parts
Hitachi Compute Blade 500 Series System Service Manual