User manual

Adapter Card Interfaces
Rev 1.5
Mellanox Technologies
16
2 Adapter Card Interfaces
2.1 I/O Interfaces
Each HCA Adapter card includes the following interfaces:
• QSFP ports
• PCI Express x8 edge connector
• I/O panel LEDs
•I
2
C compatible connector (for debug)
For dual port cards, port 1 connects to connector 1 of the device, while port 2 connects to connec-
tor 2 of the device.
Figure 3: Port Numbering
2.1.1 InfiniBand Interface
The ConnectX device is compliant with the InfiniBand Architecture Specification, Release 1.2.1. It has
compliant 4X InfiniBandports, with four Tx/Rx pairs of SerDes. HCA adapter
cards (listed in
Table 3) based on this device provide access to its ports by means of QSFP connectorsconnectors.
2.1.2 PCI Express Interface
The ConnectX-adapter cards support PCI Express 2.0 (1.1 compatible) through an x8 edge con-
nector. The device can be either a master initiating the PCI Express bus operations or a slave
responding to PCI bus operations.
Port 2
Port 1