What is the transmission speed of RS485, RS232, USB, Ethernet

The communication speed is related to many factors such as the communication medium, communication distance and communication environment. Generally speaking:

1. The maximum data transmission rate of RS-485 is 10M
2. The rate specified by RS-232 is: 50, 75, 100, 150, 300
            600, 1200, 2400, 4800, 9600, 19200, 38400 baud
3. After several upgrades, USB has different interface speeds:
        USB1.0：192KB/s
        USB1.1：1.5MB/s
        USB2.0：60MB/s
        USB3.0：640MB/s
4. EtherNET (Ethernet)
        10M: 10base-T (copper UTP mode)
        100M: 100base-TX (copper UTP mode)
        1000M: 1000base-T (copper UTP mode)