InfiniBand Interface
The network ports of the ConnectX®-5 adapter cards are compliant with the InfiniBand Architecture Specification, Release 1.3 and Release 1.4. InfiniBand traffic is transmitted through the cards' QSFP28 connectors.
Ethernet QSFP28 Interface
The network ports of the ConnectX®-5 adapter card are compliant with the IEEE 802.3 Ethernet standards listed in Features and Benefits. Ethernet traffic is transmitted through the cards' QSFP28 connectors.
PCI Express Interface
Divide per configuration
The ConnectX®-5 adapter card supports PCI Express Gen 3.0 (1.1 and 2.0 compatible) through four PCIe x4 edge connectors. The device can be either a master initiating the PCI Express bus operations, or a slave responding to PCI bus operations. The following lists PCIe interface features:
PCIe Gen 3.0 compliant, 2.0 and 1.1 compatible
- 2.5, 5.0, or 8.0, GT/s link rate x4 (per card)
- Auto-negotiates to x4, x2, or x1
- Support for MSI/MSI-X mechanisms
LED Interface
Adapter Card LED interface
There is one bi-color (yellow/green) I/O LED per port to indicate link status located on the adapter card.
Physical and Logical Link Indications - Ethernet Mode:
State | LED Behavior |
Beacon command for locating the card | Blinks yellow at 1Hz |
Error | Blinks yellow at 4Hz until error is resolved. The reason for the error may be:
|
Link Activity | Blinks green reflecting the link speed |
Link Up | Constant green light |
Physical and Logical Link Indications - InfiniBand Mode:
State | LED Behavior |
Beacon command for locating the card | Blinks yellow at 1Hz |
Error | Blinks yellow at 4Hz until error is resolved. The reason for the error may be:
|
Link Activity | Blinks green reflecting the link speed |
Link Up | Constant green light |
PCIe Auxilliary Cards LEDs Interface
Will be updated in a future revision of the document.
Heatsink Interface
The heatsink is attached to the ConnectX-5 IC in order to dissipate the heat from the ConnectX-5 IC. It is attached either by using four spring-loaded push pins that insert into four mounting holes.
ConnectX-5 IC has a thermal shutdown safety mechanism which automatically shuts down the ConnectX-5 card in cases of high-temperature event, improper thermal coupling or heatsink removal.
For the required airflow (LFM) per OPN, please refer to .Specifications v3.1.
SMBus Interface
ConnectX-5 technology maintains support for manageability through a BMC. ConnectX-5 PCIe stand-up adapter can be connected to a BMC using MCTP over SMBus or MCTP over PCIe protocols as if it is a standard NVIDIA PCIe stand-up adapter. For configuring the adapter for the specific manageability solution in use by the server, please contact NVIDIA Support.
Voltage Regulators
ConnectX-5 Main Adapter Card: The voltage regulator power is derived from the PCI Express edge connector 12V supply pins. These voltage supply pins feed on-board regulators that provide the necessary power to the various components on the card.
PCIe Auxilliary Cards: The cards are powered by 3.3V from the PCI Express edge connector.
