User`s guide

2.2 Diagnosis Functions
The GDT8546RZ and GDT8586RZ have LED indicators, an 80db audible alarm, and
boot-up beep sequences that can help diagnose the controller.
2.2.1 LED Indicators
The LEDs on the controller indicate SATA activity, data transfer, power status, PCI bus
frequency, and reset mode.
Figure 2-5. LED Labels and Colors GDT8546RZ
A:0
A:1
T S P66P
green
yellow
yellow
green
red
green
yellow
yellow
yellow
B:0
B:1
Table 2-3. LED Description GDT8546RZ
LED Description
A:0 Indicates activity on SATA port A:0.
A:1 Indicates activity on SATA port A:1.
B:0 Indicates activity on SATA port B:0.
B:1 Indicates activity on SATA port B:1.
T Indicates data transfer to the controller’s cache memory.
S When illuminated, the controller's IOP is in reset mode.
P When illuminated, the controller card is powered on.
P66
When illuminated, PCI bus frequency is 66MHz. When not illuminated, PCI bus
frequency is 33MHz.