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Rear view

The rear view of the server varies by model. Depending on the model, your server might look slightly different from the illustrations in this topic.

Refer to the following rear view for different server models:

Server model with three PCIe slots​

The following illustration shows the rear view of server model with three PCIe slots. Depending on the model, your server might look slightly different from the illustration below.
Figure 1. Rear view with two low profile and one full height PCIe adapters
Rear view of server model with three PCIe slots

Table 1. Components on the rear of the server
CalloutCallout
1 Power supply unit 12 PCIe slot 1 on riser 1 assembly
3 PCIe slot 2 on riser 1 assembly4 System ID LED
5 System error LED6 RoT fault LED
7 PCIe slot 3 on riser 2 assembly8 Power supply unit 2
9 Ethernet connectors on rear OCP module 2 (optional)10 XCC system management port (10/100/1000 Mbps RJ-45)
11 USB 3.2 Gen 1 (5Gbps) connectors (3 DCIs)12 VGA connector
13 Ethernet connectors on rear OCP module 1 (optional) 
Note
For more information about each component, see Rear components overview.

Server model with two PCIe slots​

The following illustration shows the rear views of the server model with two PCIe slots. Depending on the model, your server might look slightly different from the illustration below.
Figure 2. Rear view with two full height PCIe adapters
Rear view of server model with two PCIe slots

Table 2. Components on the rear of the server
CalloutCallout
1 Power supply unit 12 PCIe slot 1 on riser 1 assembly
3 System ID LED4 System error LED
5 RoT fault LED6 PCIe slot 3 on riser 2 assembly
7 Power supply unit 28 Ethernet connectors on rear OCP module 2 (optional)
9 XCC system management port (10/100/1000 Mbps RJ-45)10 USB 3.2 Gen 1 (5Gbps) connectors (3 DCIs)
11 VGA connector12 Ethernet connectors on rear OCP module 1 (optional)
Figure 3. Rear view with one low profile and one full height PCIe adapter
Rear view of server model with two PCIe slots

Table 3. Components on the rear of the server
CalloutCallout
1 Power supply unit 12 PCIe slot 1 on riser 1 assembly
3 PCIe slot 2 on riser 1 assembly4 System ID LED
5 System error LED6 RoT fault LED
7 Rear M.2 assembly8 Power supply unit 2
9 Ethernet connectors on rear OCP module 2 (optional)10 XCC system management port (10/100/1000 Mbps RJ-45)
11 USB 3.2 Gen 1 (5Gbps) connectors (3 DCIs)12 VGA connector
13 Ethernet connectors on rear OCP module 1 (optional) 
Note
For more information about each component, see Rear components overview.

Server model with two 2.5-inch hot-swap rear drive bays and one PCIe slot​

The following illustration shows the rear view of the server model with two hot-swap drive bays and one PCIe slot. Depending on the model, your server might look slightly different from the illustration below.
Figure 4. Rear view with one full height PCIe adapter
Rear view of server model with two 2.5-inch hot-swap rear drive bays and one PCIe slot

Table 4. Components on the rear of the server
1 Power supply unit 12 PCIe slot 1 on riser 1 assembly
3 Rear 2.5-inch drive bays (2)4 System ID LED
5 System error LED6 RoT fault LED
7 Power supply unit 28 Ethernet connectors on rear OCP module 2 (optional)
9 XCC system management port (10/100/1000 Mbps RJ-45)10 USB 3.2 Gen 1 (5Gbps) connectors (3 DCIs)
11 VGA connector12 Ethernet connectors on rear OCP module 1 (optional)
Note
For more information about each component, see Rear components overview.

Server model with two PCIe slots and a Processor NeptuneTM Core Module (NeptCore)​

The following illustration shows the rear view of the server model with two PCIe slots and a Processor NeptuneTM Core Module (NeptCore). Depending on the model, your server might look slightly different from the illustration below.

Rear view of server model with two PCIe slots and a Processor NeptuneTM Core Module (NeptCore)

Table 5. Components on the rear of the server
1 Power supply unit 12 PCIe slot 1 on riser 1 assembly
3 Hose holder4 Inlet hose
5 Outlet hose6 PCIe slot 3 on riser 2 assembly
7 Power supply unit 18 Ethernet connectors on rear OCP module 2 (optional)
9 RoT fault LED10 System error LED
11 System ID LED12 XCC system management port (10/100/1000 Mbps RJ-45)
13 USB 3.2 Gen 1 (5Gbps) connectors (3 DCIs)14 VGA connector
15 Ethernet connectors on rear OCP module 1 (optional) 
Note
For more information about each component, see Rear components overview.

Server model with a NeptCore module and rear M.2 drives​

The following illustration shows the rear view of the server model with a NeptCore module and rear M.2 drives. Depending on the model, your server might look slightly different from the illustration below.

Rear view of server model with two rear M.2 drives and a Processor NeptuneTM Core Module (NeptCore)

Table 6. Components on the rear of the server
1 Power supply unit 12 PCIe slot 1 on riser 1 assembly
3 Hose holder4 Inlet hose
5 Outlet hose6 System ID LED
7 System error LED8 RoT fault LED
9 Rear M.2 drive assembly10 Power supply unit 2
11 Ethernet connectors on rear OCP module 2 (optional)12 XCC system management port (10/100/1000 Mbps RJ-45)
13 USB 3.2 Gen 1 (5Gbps) connectors (3 DCIs)14 VGA connector
15 Ethernet connectors on rear OCP module 1 (optional) 

Rear components overview​

Ethernet connectors​

Figure 5. OCP module (two connectors)
OCP module (two connectors, seen from the rear)

Figure 6. OCP module (four connectors)
OCP module (four connectors, seen from the rear)

  • The OCP module provides two or four extra Ethernet connectors for network connections.

  • By default, any Ethernet connector on the OCP module can also function as a management connector using the shared management capacity.

Note

  • The server features three OCP slots: OCP 1 and OCP 2 are located on the rear side, and OCP 3 is positioned at the front when the customer configures the front adapter assembly.

  • OCP module 1 and front OCP module 3 are alternatives. When front OCP module 3 is configured, OCP module 1 will be disabled.

  • OCP module 1 and front OCP module 3 take priority over OCP module 2.

Hot-swap drives and drive bays​

The drive bays on the front and rear of your server are designed for hot-swap drives. The number of the installed drives in your server varies by model. When you install drives, follow the order of the drive bay numbers.

The EMI integrity and cooling of the server are protected by having all drive bays occupied. Vacant drive bays must be occupied by drive fillers.

PCIe slots​

The PCIe slots are on the rear of the server and your server supports up to three PCIe slots on riser 1 and 2 assemblies.

Power supply units​

The hot-swap redundant power supply helps you avoid significant interruption to the operation of the system when a power supply fails. You can purchase a power supply option from Lenovo and install the power supply to provide power redundancy without turning off the server.

On each power supply, there are three status LEDs near the power cord connector. For information about the LEDs, see System LEDs and diagnostics display.

USB 3.2 Gen 1 (5Gbps) connectors​

The USB 3.2 Gen 1 (5Gbps) 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.

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.

XCC system management port (10/100/1000 Mbps RJ-45)​

The XClarity Controller network connector can be used to attach an Ethernet cable to manage the baseboard management controller (BMC).

Rear LEDs​

Inlet and outlet hoses​

The Processor NeptuneTM Core Module (NeptCore) spreads two hoses out to connect to the manifolds. 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 the NeptCore module to realize system cooling.