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The adapter card includes special circuits to protect from ESD shocks to the card/server when
plugging copper cables.
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 Benefits
. Ethernet traffic is transmitted through the SFP28/QSFP28
connectors on the adapter card.
PCI Express Interface
The table below describes the supported PCIe interface in ConnectX-4 Lx adapter cards.
Supported PCIe Interface
Features
PCIe Gen 3.0 (1.1 and 2.0 compatible)
through x8 edge connectors
Link Rates: 2.5. 5.0 or 8.0GT/s.
Auto Negotiation to: x8, x4, x2 or x1.
Support for MSI/MSI-X mechanisms.
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
Description
Off
A link has not been established
Blinking Amber
(a)
4 Hz blinking amber indicates a problem with the link
Solid Green
Indicates a valid link with no active traffic
Blinking Green
Indicates a valid logical link with active traffic
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.
