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Add led colors and remove an unnecessary photo

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2026-08-05 11:07:51 +08:00
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doc/devices/FG-4GT-2SX_V2.0.md
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@@ -4,10 +4,6 @@ Following is documentation for unmanaged switch marked as `FG-4GT-2SX_V2.0`.
Original software is running UART on 9600 baud rate.
The signal quality of UART is bad. Therefore, electrical isolation is needed for the TTL wires in some cases. A simple way to isolate them is to pinch them by fingers.
<img src="photos/FG-4GT-2SX_V2.0/electrical_isolation.png" width="300" />
## Brands
* Ruiying RY-4GT-2SX