Lenovo ThinkSystem SR850 V2 Maintenance Manual page 24

4 Drive activity LED (green)
Each hot-swap drive comes with an activity LED. When this LED is flashing, it indicates that the drive is in
use.
5 2.5-inch drive bays
Install 2.5-inch drives to these bays. See "Install a 2.5-inch hot-swap drive" on page 113 for more details.
6 Power button/LED (green)
7 Identification button/LED (blue)
Use this blue LED to visually locate the server among other servers. This LED is also used as a presence
detection button. You can use Lenovo XClarity Administrator to light this LED remotely.
8 System error LED (yellow)
When this yellow LED is lit, it indicates that a system error has occurred. This LED can be controlled by the
XCC. Information provided from the LCD display of the External LCD diagnostics handset could also help
isolate an error.
9 Network activity LED (green)
When this LED is lit, it indicates that the server is transmitting to or receiving signals from the Ethernet LAN.
10 11 USB connectors
Connect a USB device, such as a mouse, keyboard, or other devices, to either of these connectors.
Following are detailed descriptions of each connector:
• USB 1: USB 2.0 with Lenovo XClarity Controller management.
Connection to XClarity Controller is primarily intended for users with a mobile device running the XClarity
Controller mobile application. When a mobile device is connected to this USB port, an Ethernet over USB
connection is established between the mobile application running on the device and the XClarity
Controller.
Select Network in BMC Configuration to view or modify settings.
Four types of settings are available:
– Host only mode
In this mode, the USB port is always solely connected to the server.
– BMC only mode
In this mode, the USB port is always solely connected to XClarity Controller.
– Shared mode: owned by BMC
In this mode, connection to the USB port is shared by the server and XClarity Controller, while the port
is switched to XClarity Controller.
– Shared mode: owned by host
In this mode, connection to the USB port is shared by the server and XClarity Controller, while the port
is switched to the server.
• USB 2: USB 3.1.
12 Pull-out information tab
This tab contains network information such as MAC address and XCC network access label.
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