I2C with ER-301 bought new in June 2021

Hello guys
sorry if this has been already solved somewhere but couldnt find the info, is my er301 is ready for i2c connexion with Teletype or Nerdseq if i bought it last June (20221), or i also need a mod on the pcb like older units ?
Thx in advance for your help

No, you do not need to modify the hardware.

Here is the documentation for i2c: Teletype Setup

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Great, thx a lot for the info Brian.