User`s manual

ConnectX IB InfiniBand Adapter Cards With PCI Express x8 User’s Manual
15
Rev 1.3
Mellanox Technologies
4.1.3 LED Assignment
The board has I/O LEDs located on the I/O panel- 2 LEDs per port. The green LED, when lit, indicates that the Infini-
Band driver is running and a valid physical connection between nodes exists. If the green LED is blinking, it indicates
a problem with the physical link. The yellow LED when lit, indicates 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 5: Physical and Logical Link Indications
Note: The short bracket has the same port and LED footprint as the tall bracket.
4.1.4 I
2
C Compatible Interface
A three-pin header on the HCA card is provided as the I
2
C compatible interface. See Figure 8 on page 19 for the loca-
tion on the board.
Figure 6: I
2
C Connector
4.2 Power
All adapter cards receive 12V and 3.3V power from the PCI Express Edge connector. All other required power volt-
ages are generated by on-board switch mode regulators. See “Specifications” on page 19.
4.3 Memory
The HCA cards support multiple memory devices through the PCI Flash, and I2C-compatible interfaces.
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 2
Port 1