ConnectX IB Dual Port InfiniBand Adapter Cards With PCI Express x8 User’s Manual
15
Rev 1.2
Mellanox Technologies
The cards can be either a master initiating the PCI Express bus operations or a slave responding to PCI bus opera-
tions.
4.1.2 LED Assignment
The board has four LEDs located on the I/O panel - 2 LEDs per port. The green LED, when lit, indicates that the
InfiniBand driver is running and a valid physical connection between nodes exists. The yellow LED when lit, indi-
cates a valid data activity link, this is the logical link. The yellow LED illuminates when the InfiniBand network is
discovered over the physical link. A valid data activity link without data transfer is designated by a constant yellow
LED indication. A valid data activity link with data transfer is designated by a blinking yellow LED indication. If the
LEDs are not active, either the physical link or the logical link (or both) connections have not been established.
Figure 3: Physical and Logical Link Indications
Note: The short bracket has the same port and LED footprint as the tall bracket.
4.2 I
2
C Compatible Interface
A three-pin header on the HCA card is provided as the I
2
C compatible interface. See Figure 6 on page 26 for the loca-
tion on the board.
Figure 4:
I
2
C
Connector
4.3 Power
All adapter cards receive power from the PCI Express Edge connector. All other required power voltages are gener-
ated by on-board switch mode regulators. See “Specifications” on page 26.
Table 6 - LEDs
Port Number
LED Name
Port 1
Physical Link - Green
Constant on indicates a good physical link
Blinking indicates a problem with the Physical link
Data Activity - Yellow
Blinking indicates Data Transfer
Constant on indicates no Data Transfer
Port 2
Physical Link - Green
Constant on indicates a good physical link
Blinking indicates a problem with the Physical link
Data Activity - Yellow
Blinking indicates Data Transfer
Constant on indicates no Data Transfer
Port 1
Port 2
