Lenovo ThinkSystem SR550, Maintenance Manual, Page: 32 / 206

8 Power supply 1
The hot-swap redundant power supplies help you avoid significant interruption to the operation of the
system when a power supply fails. You can purchase a power supply option from Lenovo and install the
power supply to provide power redundancy without turning off the server. On each power supply, there are
three status LEDs near the power cord connector. For information about the status LEDs, see “Rear view
LEDs” on page 24.
9 NMI button
Press this button to force a nonmaskable interrupt (NMI) to the processor. By this way, you can blue screen
the server and take a memory dump. You might have to use a pen or the end of a straightened paper clip to
press the button.
10 11 USB 3.0 connectors
Used to attach a device that requires a USB 2.0 or 3.0 connection, such as a keyboard, USB mouse, or USB
storage device.
12 VGA connector
Used to attach a high-performance monitor, a direct-drive monitor, or other devices that use a VGA
connector.
13 Ethernet connector 2
14 Ethernet connector 1
Used to attach an Ethernet cable for a LAN. The Ethernet connector has two status LEDs to help you identify
the Ethernet connectivity and activity. See “Rear view LEDs” on page 24.
Ethernet connector 1 can be set as XClarity Controller network connector. To set Ethernet connector 1 as
XClarity Controller network connector, start Setup utility, go to
BMC Settings
➙
Network Settings
➙
Network Interface Port
and select
Shared
. Then, go to
Shared NIC on
and select
Onboard Port 1
.
15 XClarity Controller network connector
Used to attach an Ethernet cable to manage the system using XClarity Controller.
16 Ethernet connector on the LOM adapter
Used to attach an Ethernet cable.
17 Ethernet connector on the LOM adapter
This Ethernet connector can be set as XClarity Controller network connector. To set the Ethernet connector
as XClarity Controller network connector, start Setup utility, go to
BMC Settings
➙
Network Settings
➙
Network Interface Port
and select
Shared
. Then, go to
Shared NIC on
and select
PHY Card
.
Rear view LEDs
There are several LEDs on the rear of the server.
The following illustration shows the LEDs on the rear of the server.
24
ThinkSystem SR550 Maintenance Manual