ConnectX®-4 VPI Single and Dual QSFP28 Port Adapter Card User Manual for Dell PowerEdge
Rev 1.3
Mellanox Technologies
14
2
Interfaces
Each adapter card includes the following interfaces:
• “InfiniBand Interface”
• “Ethernet QSFP28 Interface”
• “PCI Express Interface”
• “LED Interface”
The adapter cards include special circuits to protect from ESD shocks to the card/server when
plugging copper cables.
2.1
InfiniBand Interface
The network ports of the ConnectX®-4 adapter cards are compliant with the
InfiniBand Architec-
ture Specification, Release 1.3.
InfiniBand traffic is transmitted through the cards' QSFP28 connec-
tors.
2.2
Ethernet QSFP28 Interface
The network ports of the ConnectX®-4 adapter card are compliant with the IEEE 802.3 Ethernet
standards listed in
Table 4, “Features,” on page 12
. Ethernet traffic is transmitted through the
cards' QSFP28 connectors.
2.3
PCI Express Interface
The ConnectX®-4 adapter card supports PCI Express 3.0 (1.1 and 2.0 compatible) through
an
x16 edge connector.
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, 1.1 and 2.0 compatible
• 2.5, 5.0, or 8.0 GT/s link rate x16
• Auto-negotiates to x16, x8, x4, x2, or x1
• Support for MSI/MSI-X mechanisms
2.4
LED Interface
There is a one bi-color I/O LED per port located on the adapter card. For LED specifications,
please refer to
