NLX Power Connectors
The NLX Main Power Supply Connector uses the same pinouts, wire colors, and physical connectors as the ATX Main Power Supply Connector shown in Table 26-12. The NLX specification also defines the NLX Optional Power Supply Connector, shown in Table 26-16. This connector uses the same physical connectors and 22 AWG wire as the ATX Optional Power Supply Connector described in the preceding section, but uses different wire colors and a slightly different pinout. Wire colors are standard.
Table 26-16. NLX Optional Power Supply Connector
|
Pin |
Color |
Signal |
Pin |
Color |
Signal | |
|---|---|---|---|---|---|---|
|
1 |
white |
FanM |
4 |
NC |
Reserved | |
|
2 |
blue |
FanC |
5 |
grey |
1394 | |
|
3 |
brown |
Sense |
6 |
NC |
Reserved |
Pin 5 (1394) on this connector is analogous to Pin 5 (1394V) on the ATX connector, and also supplies voltage to unpowered 1394 devices. However, instead of using Pin 4 as a ground return path for 1394 voltage, this connector leaves Pin 4 unconnected. It appears unwise to share the main system ground return path with the ground return path for unregulated 1394 voltage from Pin 5, particularly with Pin 4 sitting there so obviously unused. If you understand the reason for this difference, please let us know.