1. USB to TTL Serial Connection

Below are links to other information sources on how to connect USB to TTL to your Linksys WRT router:

• Linksys WRT1900AC Serial Port
• Linksys WRT TTL Serial Port Pinout
• Linksys WRT3200ACM USB to TTL Connection

Notes:

1. All WRT models require the four foot screws removed to open cover.
2. To get to the WRT1900AC V1 serial port you typically have to separate the black plastic cover section.
3. On newer Linksys WRT models just pulling off the front blue cover is enough to get to the serial port.

USB to TTL Serial Cable example:

• adafruit USB to TTL cable

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Warning!

Using a "USB to RS232" or "RS232 Null Modem" cable could damage your Linksys WRT router because they are different voltages than TTL.