
Dell PowerEdge R940 Installation and Service Manual
Back view of the system

| Item | Slot, button, or connector | Icon | Description |
|---|---|---|---|
| 1 | expansion card riser (right) | N/A | The expansion card riser (right) supports up to three full-height PCI Express expansion cards. For more information, see the Expansion card installation guidelines section. |
| 2 | expansion card slot | N/A | The expansion slots on the system board supports full-height half-length PCI Express expansion cards. |
| 3 | NIC port (4) | ![]() | The NIC ports that are integrated on the network daughter card (NDC) provide network connectivity. For more information about the supported configurations, see the Technical specifications section. |
| 4 | expansion card riser (left) | N/A | The expansion card riser (left) supports up to three full-height PCI Express expansion cards. For more information, see the Expansion card installation guidelines section. |
| 5 | Power supply unit (2) | ![]() | For more information, see the Technical specifications section. |
| 6 | Video port | ![]() | Enables you to connect a display device to the system. For more information, see the Technical specifications section. |
| 7 | Serial port | ![]() | Enables you to connect a serial device to the system. For more information, see the Technical specifications section. |
| 8 | iDRAC9 Enterprise port | ![]() | Enables you to remotely access iDRAC. For more information, see the iDRAC User’s Guide at www.dell.com/poweredgemanuals. |
| 9 | USB port (2) | ![]() | The USB ports are 9-pin, USB 3.0-compliant. These ports enable you to connect USB devices to the system. |
| 10 | System identification button | ![]() | The System Identification (ID) button is available on the front and back of the systems. Press the button to identify a system in a rack by turning on the system ID button. You can also use the system ID button to reset iDRAC and to access BIOS using the step through mode. |
| 11 | System status indicator cable port | Enables you to connect the status indicator cable and view system status when the CMA is installed. |
For more information, see the Dell EMCPowerEdgeR940 Technical Specifications on the product documentation page.






