Hard disk drives
Models: WDA-380 and WDA-3160
The following information is the only information available for these drives:
LED port

| Pin # |
Status |
Signal name |
| 1 |
Out |
-LED |
| 2 |
Out |
+LED |
Signal description LED output (+LED)
This pin has a maximum current source capability of approximately +18 mA at nominal
condition. This pin is designed for an LED light.
Signal description LED output (-LED)
This pin has a current sink capability of approximately +100 mA at 0.25 V. This pin is designed
for an LED light.
Switch setting
A 4-bit dip switch on the control card is available for a drive configuration.
When the drive leaves the factory, the switch will be set as shown below.

Note: When a drive 1 (slave) is installed in the system with a drive 0
(master) already installed, there is no change to the switch setting for a drive
0 (master). Only the switch of drive 1 (slave) is required to be set.
| Switch |
Name |
Description |
| 1 |
IORDY |
If a host supports IORDY signal, this bit must be set on |
| 2 |
-DRV0/DRV1 |
When set ON, the drive is set as drive 0 (master) -- When set OFF, the drive
is set as drive 1 (slave) |
| 3 |
-CAM/AT |
This bit must be set ON |
| 4 |
Not used |
Not used |
|