Rear view

1 Riser 1 (PCIe slot 1-3)​

2 Riser 2 (PCIe slot 5-6)​

3 4 PCI Express 3.0 (x8)​

Install adapters, particularly RAID adapters, to these slots.

5 Power supply units​

6 AC power LED (green)​

Each hot-swap power supply unit comes with one AC and one DC power LED. When the AC power LED is lit, it indicates that sufficient power is being supplied to the power supply through the power cord. During normal operation, both the AC and DC power LEDs are lit.

7 DC power LED (green)​

Each hot-swap power supply unit comes with one AC and one DC power LED. When the DC power LED is lit, it indicates that the power supply is supplying adequate dc power to the system. During normal operation, both the AC and dc power LEDs are lit.

8 Power supply error LED (yellow)​

When the power supply error LED is lit, it indicates that the power supply has failed.

9 Serial connector​

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).

10 VGA connector​

11 USB 3.1 connectors​

Connect a USB device, such as a mouse, keyboard, or other devices, to either of these connectors.

12 XClarity Controller network connector​

Use this connector to manage the server, by using a dedicated management network. If you use this connector, the Lenovo XClarity Controller cannot be accessed directly from the production network. A dedicated management network provides additional security by physically separating the management network traffic from the production network. You can use the Setup utility to configure the server to use a dedicated systems-management network or a shared network.

13 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.

14 OCP 3.0 Ethernet adapter​

The OCP 3.0 Ethernet adapter provides two or four extra Ethernet connectors for network connections. One of the Ethernet connectors on the OCP 3.0 Ethernet adapter can also function as a management connector with shared management capacity. If the shared management connector fails, traffic can automatically switch over to another connector on the adapter.

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

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