Interfaces; Ethernet Sfp28 And Qsfp28 Interfaces; Pci Express Interface; Led Interface - Nvidia Mellanox ConnectX-4 Lx User Manual

Interfaces

Ethernet SFP28 and QSFP28 Interfaces

The network ports of the ConnectX®-4 Lx adapter card are compliant with the IEEE 802.3 Ethernet
standards listed in Features and
connectors on the adapter card.
The adapter card includes special circuits to protect from ESD shocks to the card/server when
plugging copper cables.

PCI Express Interface

The table below describes the supported PCIe interface in ConnectX-4 Lx adapter cards.
Supported PCIe Interface
PCIe Gen 3.0 (1.1 and 2.0 compatible)
through x8 edge connectors

LED Interface

There is one bi-color I/O LED per port to indicate link status located on the adapter card.
Link Indications (Ethernet Mode)
LED Color and State
Off
(a)
Blinking Amber
Solid Green
Blinking Green
Note a. 1Hz Blinking amber occurs due to running a beacon command for locating the adapter card.

Heatsink Interface

A heatsink is attached to the ConnectX-4 Lx IC in order to dissipate the heat from the ConnectX-4 Lx IC.
It is attached either by using four spring-loaded push pins that insert into four mounting holes, or by
screws.
Benefits. Ethernet traffic is transmitted through the SFP28/QSFP28
Link Rates: 2.5. 5.0 or 8.0GT/s.
Auto Negotiation to: x8, x4, x2 or x1.
Support for MSI/MSI-X mechanisms.
A link has not been established
4 Hz blinking amber indicates a problem with the link
Indicates a valid link with no active traffic
Indicates a valid logical link with active traffic
Features
Description
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