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Rear view

The rear of the server provides access to several components, including the power supplies, PCIe adapters, serial port, and Ethernet port.

Figure 1. Rear view
Rear view
Table 1. Components on the rear view
1 PCIe riser 1 (PCIe slot 15-16)5 USB 3.2 Gen 1 connectors (total of three connectors)
2 PCIe riser 2 (PCIe slot 20-21)6 VGA connector
3 Power supply units7 System management 1 GB RJ-45 connector dedicated to Lenovo XClarity Controller functions.
4 NMI button8 OCP 3.0 Ethernet adapter
Note
PCIe riser 1 and PCIe riser 2 are not supported in the SXM GPU Model.

1 / 2 PCIe riser​

Install PCIe adapters into these risers. See the following table for PCIe slots corresponding to the risers.

Table 2. PCIe riser and corresponding slots
PCIe riserPCIe slot (PCI Express 4.0 x16, FH/FL)
1 PCIe riser 1

Slot 15: PCI Express 4.0 x16, FH/HL

Slot 16: PCI Express 4.0 x16 / x8, FH/HL

2 PCIe riser 2

Slot 20: PCI Express 4.0 x16, FH/HL

Slot 21: PCI Express 4.0 x16 / x8, FH/HL

3 Power supply units​

Install power supply units to these bays, connect them to power cords. Make sure the power cords are connected properly. Following are the power supplies supported by this system:

  • 2600-watt Titanium, input power 200-240 VAC

  • 2400-watt Platinum, input power 200-240 VAC

  • 1800-watt Platinum, input power 200-240 VAC

Each hot-swap power supply has three status LEDs:
Figure 2. 2400W/2600W power supply LEDs
2400W/2600W power supply LEDs
Figure 3. 1800W power supply LEDs
1800W power supply LEDs
LEDDescription
1 Input status
The input status LED can be in one of the following states:

  • Off: The power supply is disconnected from the ac power source.

  • Green: The power supply is connected to the ac power source.

2 Output status
The output status LED can be in one of the following states:

  • Off: The server is powered off, or the power supply is not working properly. If the server is powered on but the output status LED is off, replace the power supply.

  • Slow blinking green (about one flash every two seconds): The power supply is in cold redundancy active mode.

  • Fast blinking green (about 2 flashes each second): The power supply is in cold redundancy sleep mode.

  • Green: The server is on and the power supply is working normally.

3 Fault LED

  • Off: The power supply is working normally

  • Amber: The power supply has failed. To resolve the issue, replace the power supply.

4 NMI button​

Press this button to force a nonmaskable interrupt to the processor. You might have to use a pen or the end of a straightened paper clip to press the button. You can also use it to force a blue-screen memory dump. Use this button only when you are directed to do so by Lenovo Support.

5 USB 3.2 Gen 1 connector​

There are three USB 3.2 Gen 1 connectors on the rear of the server. Connect a USB device, such as a mouse, keyboard, or other devices, to either of these connectors.

6 VGA connector​

Connect a monitor to this connector.

7 System management port​

The server has a 1 GB RJ-45 connector dedicated to Lenovo XClarity Controller functions. Through the management port, you can access the Lenovo XClarity Controller directly by connecting your laptop to the management port using an Ethernet cable. Make sure that you modify the IP settings on the laptop so that it is on the same network as the server default settings. A dedicated management network provides additional security by physically separating the management network traffic from the production network.

The system management port has two status LEDs to help you identify the Ethernet connectivity and activity:
Figure 4. System management port LEDs
System management port LEDs
LEDDescription
1 1 GB RJ-45 Ethernet port link LED
Use this green LED to distinguish the network connectivity status:

  • Off: The network link is disconnected.

  • Green: The network link is established.

2 1 GB RJ-45 Ethernet port activity LED
Use this green LED to distinguish the network activity status:

  • Off: The server is disconnected from a LAN.

  • Green: The network is connected and active.

8 OCP 3.0 Ethernet adapter​

The OCP 3.0 Ethernet adapter provides a group of two or four Ethernet connectors on OCP 3.0 Ethernet adapter for network connections.

The system may support a 2-port or a 4-port OCP module for network connections. Port numbering are shown in the illustrations below.
Figure 5. Port numbering — 2-port OCP module
Port numbering — 2-port OCP 3.0 Ethernet adapter
Figure 6. Port numbering — 4-port OCP 3.0 module
Port numbering — 4-port OCP 3.0 Ethernet adapter