![](http://pdfasset.owneriq.net/f/5b/f5bd8314-773c-4f64-bd3e-33f7f6181101/f5bd8314-773c-4f64-bd3e-33f7f6181101-bg38.png)
46 ST43401N/ND, ST43402ND User’s Manual, Rev. B
Control
Board
Optional
Bezel
Socket for Active LED (red)
Heartbeat LED (green)
Ready LED (green)
Port A Enabled LED (green)
Port B Active LED (red)
Port B Enabled LED (green)
Figure 23. LEDs on ST43402ND drives