Oct 27 2021 0 Here are images of the types of cables needed to connect the rapsberry to the inverter in RS232 serial mode: RJ45 <--> DB9 cable supplied with the UPS + RS232 <---> USB converter USB to RS-232 adapter (35 cm)see Post navigation Previous PostPrevious PrerequisitesNext PostNext Smart ED car recharge for less than 1€ for 500 Km