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+# Emisar 2-channel driver connected to only 1 set of LEDs
+
+The default Emisar D4S driver doesn't support a lighted switch, so for lights
+built with one of those, Hank puts in a 2-channel driver instead... but he only
+connects 1 set of LEDs.
+
+This is an odd hardware configuration used only for special orders, I think.
+
+The driver itself has 3 power channels:
+
+ 1. Linear regulator 1
+ 2. Linear regulator 2
+ 3. Direct-drive FET
+
+Channels 1 and 3 are connected to the main LEDs, while channel 2 is not
+physically wired up to anything.
+
+Two channel modes are included:
+
+ 1. Linear only
+ 2. Linear + DD FET
+
+Channel mode 2 is default, and the only mode enabled after a factory reset.
+Channel mode 1 is included in case anyone wants to turn off the DD FET.
+