Ethernet SFP28 and QSFP28 Interfaces
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 SFP28/QSFP28 connectors on the adapter card.
The adapter card includes special circuits to protect from ESD shocks to the card/server when plugging copper cables.
Networking Port LEDS Interface
There are two I/O LEDs, LED0 and LED1, per port to indicate speed and link status. LED0 is a bicolor (Yellow and Green) LED and LED1 is a single color (Green) LED.
LED and State
|1Hz blinking Yellow||Beacon command for locating the adapter card.|
|4Hz blinking Yellow|
Indicates an error with the link. The error can be one of the following:
PCI Express Interface
The table below describes the supported PCIe interface in ConnectX-5 and ConnectX-5 Ex adapter cards.
|IC Model||Supported PCIe Interface||Features|
|ConnectX-5||PCIe Gen 3.0 (1.1 and 2.0 compatible) through x16 edge connectors|
Link Rates: 2.5. 5.0 or 8.0GT/s.
|ConnectX-5 Ex||PCIe Gen 3.0/4.0 (1.1 and 2.0 compatible) through x16 edge connectors|
Link Rates: 2.5. 5.0, 8.0 or 16.0GT/s.
FRU EEPROM allows the baseboard to identify different types of Mezzanine cards. MEZZ FRU EEPROM is accessible through MEZZ_SMCLK and MEZZ_SMDATA (Connector A18 and A19). MEZZ FRU EEPROM address is 0xA2 and its capacity is 4Kb.
Heat Sink Interface
A 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.
ConnectX-6 technology maintains support for manageability through a BMC. ConnectX-6 OCP 3.0 adapter can be connected to a BMC using MCTP over SMBus or MCTP over PCIe protocols as if it is a standard NVIDIA OCP 3.0 adapter. For configuring the adapter for the specific manageability solution in use by the server, please contact NVIDIA Support.
The voltage regulator power is derived from the OCP 3.0 edge connector 12V and 3.3V supply pins. These voltage supply pins feed onboard regulators that provide the necessary power to the various components on the card.
The adapter card incorporates a CPLD device that controls the networking port LEDs and the scan chain. It draws its power supply from 3.3V_EDGE.