Rear view
The rear of the server provides access to several components, including the power supplies, PCIe adapters, serial port, and Ethernet port.
| 1 PCIe riser fillers | 2 PCIe riser 2 (Slot 3 to Slot 5) Slot 5 supports hot-swap M.2 drives. |
| 3 PCIe riser 3 (Slot 6 to Slot 8) Slot 8 supports hot-swap M.2 drives. | 4 Power supply bay 2 |
| 5 OCP module 2 (optional) | 6 XCC system management port (10/100/1000 Mbps RJ-45) |
| 7 USB 3.2 Gen 1 (5Gbps) connector with USB 2.0 XCC system management (depending on the configuration) | 8 USB 3.2 Gen 1 (5Gbps) connector |
| 9 VGA connector | 10 OCP module 1 (optional) |
| 11 Power supply bay 1 |
1 PCIe riser fillers
The server comes with PCIe riser fillers to ensure proper system cooling.
2 3 PCIe slots
The server supports up to six PCIe slots on the rear. Hot-swap M.2 drives can be installed in Slot 5 or Slot 8.
In configurations with Processor Neptune® Core Module, slot 8 is occupied by inlet and outlet hoses of the Processor Neptune® Core Module. The inlet hose conveys warm water from the facility to the cold plates to cool down the processors, and the outlet hose conducts hot water out of Processor Neptune® Core Module to realize system cooling.
For more information, see PCIe slots and PCIe adapters.
4 11 Power supply bays
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-unit LEDs.
5 10 OCP module
The OCP module provides two or four extra Ethernet connectors for network connections.
Figure 2. OCP module (two connectors)  | Figure 3. OCP module (four connectors)  |
By default, any Ethernet connector on the OCP module can also function as a management connector using the shared management capacity.
Installation priority: OCP slot 1 > OCP slot 2
Management NIC adapter and ThinkSystem OCP 4 to 1 Management Port Consolidation Adapter can be installed only on OCP slot 1.
When ThinkSystem OCP 4 to 1 Management Port Consolidation Adapter is installed, OCP slot 2 is disabled.
6 XCC system management port (10/100/1000 Mbps RJ-45)
This RJ-45 connector is dedicated to Lenovo XClarity Controller (XCC) functions. You can access the Lenovo XClarity Controller directly by connecting your laptop to this connector 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.
7 USB 3.2 Gen 1 (5Gbps) connector with USB 2.0 XCC system management (depending on the configuration)
The connector can function as a regular USB 3.2 Gen 1 connector to the host OS; it can be used to attach a USB-compatible device, such as a USB keyboard, USB mouse, or USB storage device.
When there are no USB connectors at the front, this connector can function as a USB 2.0 Lenovo XClarity Controller management port.
8 USB 3.2 Gen 1 (5Gbps) connector
The connector can be used to attach a USB-compatible device, such as a USB keyboard, USB mouse, or USB storage device.
9 VGA connector
The VGA connectors on the front and rear of the server can be used to attach a high-performance monitor, a direct-drive monitor, or other devices that use a VGA connector.