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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.

Note
Depending on the configuration, your server might be slightly different from the image.
Figure 1. Rear view
Rear view
Table 1. Components on the rear view
1 PCIe riser 1 (PCIe slot 3-8)8 USB 3.2 Gen 1 (5 Gbps)
2 PCIe riser 2 (PCIe slot 9-14)9 VGA connector
3 PCIe riser 3 (PCIe slot 15-20)10 USB 3.2 Gen 1 (5 Gbps)
4 Power supply bays 1-4 (bottom to top)11 USB 3.2 Gen 1 (5 Gbps)
5 OCP slot 212 XCC system management port (1 GB RJ-45)
6 Serial port13 OCP slot 1
7 NMI button 

1 PCIe riser 1​

See the following table for PCIe slots corresponding to the PCIe risers.

Table 2. PCIe riser 1 and corresponding PCIe slots
Riser typex8/x8 PCIe G4 Riser 1/3 FHHL3 x16 & 3 x8 PCIe G4 Riser 1/3 FHFL4 x16 & 1 x8 PCIe G5 Riser 1/3 FHFL
Slot 3N/Ax16 (Gen4 x8)x16 (Gen5 x8)
Slot 4N/Ax16 (Gen4 x16)x16 (Gen5 x16)
Slot 5N/Ax16 (Gen4 x8)N/A
Slot 6N/Ax16 (Gen4 x16)x16 (Gen5 x16)
Slot 7x16 (Gen4 x8)x16 (Gen4 x8)x16 (Gen5 x16)
Slot 8x16 (Gen4 x8)x16 (Gen4 x16)x16 (Gen4 x16)
Note
  • Slot 7-8 supports FHHL PCIe adapters only.
  • Slot 3-6 supports FHFL PCIe adapters with PCIe riser extender installed.
    • Slot 4 supports DW FHFL GPU installed in slot 3 and 4.
    • Slot 6 supports DW FHFL GPU installed in slot 5 and 6.

2 PCIe riser 2​

See the following table for PCIe slots corresponding to the PCIe risers.

Table 3. PCIe riser 2 and corresponding PCIe slots
Riser type6 x8 PCIe G4 Riser 2 HHHL6 x8 PCIe G5 Riser 2 HHHL
Slot 9x16 (Gen4 x8)x16 (Gen5 x8)
Slot 10x16 (Gen4 x8)x16 (Gen5 x8)
Slot 11x16 (Gen4 x8)x16 (Gen4 x8)
Slot 12x16 (Gen4 x8)x16 (Gen4 x8)
Slot 13x16 (Gen4 x8)x16 (Gen5 x8)
Slot 14x16 (Gen4 x8)x16 (Gen5 x8)
Note
Slot 9-14 supports low profile PCIe adapters.

3 PCIe riser 3​

See the following table for PCIe slots corresponding to the PCIe risers.

Table 4. PCIe riser 3 and corresponding PCIe slots
Riser typex8/x8 PCIe G4 Riser 1/3 FHHL3 x16 & 3 x8 PCIe G4 Riser 1/3 FHFL4 x16 & 1 x8 PCIe G5 Riser 1/3 FHFL
Slot 15N/Ax16 (Gen4 x8)x16 (Gen5 x8)
Slot 16N/Ax16 (Gen4 x16)x16 (Gen5 x16)
Slot 17N/Ax16 (Gen4 x8)N/A
Slot 18N/Ax16 (Gen4 x16)x16 (Gen5 x16)
Slot 19x16 (Gen4 x8)x16 (Gen4 x8)x16 (Gen5 x16)
Slot 20x16 (Gen4 x8)x16 (Gen4 x16)x16 (Gen4 x16)
Riser type7mm/x8/x8 PCIe G4 Riser 3 FHHL2 x16 & 3 x8 + 7mm PCIe G4 Riser 3 FHFL3 x16 & 1 x8 + 7mm PCIe G5 Riser 3 FHFL
Slot 157mm drive bayx16 (Gen4 x8)x16 (Gen5 x8)
Slot 16x16 (Gen4 x16)x16 (Gen5 x16)
Slot 17N/Ax16 (Gen4 x8)N/A
Slot 18N/Ax16 (Gen4 x16)x16 (Gen5 x16)
Slot 19x16 (Gen4 x8)x16 (Gen4 x8)x16 (Gen5 x16)
Slot 20x16 (Gen4 x8)7mm drive bay7mm drive bay
Note
  • Slot 19-20 supports FHHL PCIe adapters only.
  • Slot 15-18 supports FHFL PCIe adapters with PCIe riser extender installed.
    • Slot 16 supports DW FHFL GPU installed in slot 15 and 16
    • Slot 18 supports DW FHFL GPU installed in slot 17 and 18

4 Power supply bays 1-4 (bottom to top)​

Install power supply units to these bays, connect them to power cords. Make sure the power cords are connected properly. See Technical specifications for the power supplies supported by this system.

For information about the LEDs, see Power supply LEDs.

5 OCP slot 2​

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 2. Port numbering — 2-port OCP module
Port numbering — 2-port OCP 3.0 Ethernet adapter
Figure 3. Port numbering — 4-port OCP 3.0 module
Port numbering — 4-port OCP 3.0 Ethernet adapter

6 Serial port​

Connect a 9-pin serial device to this connector. The serial port is shared with XCC. XCC can take control of the shared serial port to redirect serial traffic, using Serial over LAN (SOL).

7 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.

8 / 10 / 11 USB 3.2 Gen 1 (5 Gbps) connectors​

The USB 3.2 Gen 1 (5 Gbps) connectors are direct connect interfaces (DCIs) for debugging, which can be used to attach a USB-compatible device, such as a USB keyboard, USB mouse, or USB storage device.

9 VGA connector​

Connect a monitor to this connector.

12 XCC system management port (1 GB RJ-45)​

The server has a 1 GB RJ-45 connector dedicated to Lenovo XClarity Controller (XCC) functions. Through the system 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.

See the following for more information:

13 OCP slot 1​

The OCP slot supports the following:
  • 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 4. Port numbering — 2-port OCP module
    Port numbering — 2-port OCP 3.0 Ethernet adapter
    Figure 5. Port numbering — 4-port OCP 3.0 module
    Port numbering — 4-port OCP 3.0 Ethernet adapter

  • The system may support a Management NIC adapter. Install the management NIC adapter into the OCP slot in place of the OCP module to function as a redundant XCC system management port.