Lenovo 1047 - Manual (Page 22)

• Power-on self-test (POST)
• Redundant Ethernet connection with failover capability (requires an optional Ethernet card)
• Standby voltage for system-management features and monitoring
• System-error light-emitting diode (LED) on the front panel
• Vital product data (VPD), including the serial number information and replacement part numbers, stored in
the nonvolatile memory for easier remote maintenance
10 ThinkServer User Guide