Server Controls, Leds, And Power; Front View - Lenovo System x3550 M5 Installation And Service Manual

• Serial Presence Detection (SPD) on memory, VPD on system board, power supply, and hard disk drive or
solid-state drive backplanes, microprocessor and memory expansion tray, and Ethernet cards
• Single-DIMM isolation of excessive correctable error or multi-bit error by the Unified Extensible Firmware
Interface (UEFI)
• Solid-state drives
• Standby voltage for system-management features and monitoring
• Startup (boot) from LAN through remote initial program load (RIPL) or dynamic host configuration
protocol/boot protocol (DHCP/BOOTP)
• System auto-configuring from the configuration menu
• System-error logging (POST and IMM)
• Systems-management monitoring through the Inter-Integrated Circuit (IC) protocol bus
• Uncorrectable error (UE) detection
• Upgradeable POST, Unified Extensible Firmware Interface (UEFI), diagnostics, IMM firmware, and
read-only memory (ROM) resident code, locally or over the LAN
• Vital product data (VPD) on microprocessors, system board, power supplies, and SAS/SATA (hot-swap
hard disk drive or solid-state drive) backplane
• Wake on LAN capability

Server controls, LEDs, and power

This section describes the controls and light-emitting diodes (LEDs) and how to turn the server on and off.
For the locations of other LEDs on the system board, see "System-board LEDs" on page 29.

Front view

The following illustrations show the controls, LEDs, and connectors on the front of your server model. As
they are the same for either hot-swap or simple-swap models, only the hot-swap model is used to show
the relevant locations.
Rack
release
latch
Figure 11. Front view: eight 2.5-inch hot-swap-drive server model with the simple media cage
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Lenovo System x3550 M5 Installation and Service Guide
Hard disk drive
status LED (yellow)
Hard disk drive
activity LED (green)
2.5-inch hard disk
drive bays
Operator
information
USB 2.0
connector panel
Rack
release
latch