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2. USB-to-serial adapter - Wikipedia

   en.wikipedia.org/wiki/USB-to-serial_adapter

   A USB-to-serial adapter or simply USB adapter is a type of protocol converter that is used for converting USB data signals to and from serial communications standards (serial ports). Most commonly the USB data signals are converted to either RS-232 , RS-485 , RS-422 , or TTL-level UART serial data.

3. USB communications device class - Wikipedia

   en.wikipedia.org/wiki/USB_communications_device...

   With a vendor-supplied INF file, Windows Vista works with USB CDC and USB WMCDC devices. [1] This class can be used for industrial equipment such as CNC machinery to allow upgrading from older RS-232 serial controllers and robotics, since they can keep software compatibility. The device attaches to an RS-232 communications line and the ...

4. StarTech.com - Wikipedia

   en.wikipedia.org/wiki/StarTech.com

   StarTech.com's product range includes adapters, converters, connectors, extenders, splitters, and switches. The company's products are divided into 8 main categories: Audio/Video Products, Electrical Cables , Server Management , Hard Drive Accessories, Expansion Cards , Networking Products, Computer Parts , and Laptop/Notebook Docking Stations ...

5. RS-232 - Wikipedia

   en.wikipedia.org/wiki/RS-232

   Many RS-232 driver chips have inbuilt charge pump circuitry to produce the required voltages from a 3 or 5 volt supply. RS-232 drivers and receivers must be able to withstand indefinite short circuits to the ground or to any voltage level up to ±25 volts. The slew rate, or how fast the signal changes between levels, is also controlled.

6. Virtual COM port - Wikipedia

   en.wikipedia.org/wiki/Virtual_COM_port

   A software-based virtual serial port presents one or more virtual serial port identifiers on a PC which other applications can see and interact with as if they were real hardware ports, but the data sent and received to these virtual devices is handled by software that manipulates the transmitted and received data to grant greater functionality.

7. FTDI - Wikipedia

   en.wikipedia.org/wiki/FTDI

   After Windows drivers became available on 14 October (Patch Tuesday) via Windows Update, it was reported by users of hardware enthusiast forums and websites that the drivers could soft-brick counterfeit and software-compatible clones of the chips by changing their USB "Product ID" to "0000".