Review on 🔌 Boost Raspberry Pi Connectivity with JANSANE PL2303TA Serial Console by Shigg Bigbee

These are RS-232 cables from DB9/M to DB9/F, 10 feet long. These are straight cables, not null modem cables. Keep that in mind when you buy them. If you need a null modem connection, either buy the correct cable or a crossover null modem connector. I use them to remotely control devices that use an RS-232 connection and they work flawlessly. The voltage of RS-232 TX and RX can vary from ±3 VDC to ±25 VDC, negative voltage corresponds to logic state "1" and vice versa, positive voltage corresponds to logic state "0". You have nothing to do with USB connections until you attach a USB stick to one end.