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  2. Serial port - Wikipedia

    en.wikipedia.org/wiki/Serial_port

    The 9-pin DE-9 connector has been used by most IBM-compatible PCs since the Serial/Parallel Adapter option for the PC-AT, where the 9-pin connector allowed a serial and parallel port to fit on the same card. [4] This connector has been standardized for RS-232 as TIA-574.

  3. USB - Wikipedia

    en.wikipedia.org/wiki/USB

    However, the SuperSpeed USB part of the system still implements the one-lane Gen 1×1 operation mode. Therefore, two-lane operations, namely USB 3.2 Gen 1×2 (10 Gbit/s) and Gen 2×2 (20 Gbit/s), are only possible with Full-Featured USB-C. As of 2023, they are somewhat rarely implemented; Intel, however, started to include them in its 11th ...

  4. RS-232 - Wikipedia

    en.wikipedia.org/wiki/RS-232

    Male pinout of a 25-pin serial port (D-subminiature, DB-25) commonly found on 1980s computers. The following table lists commonly used RS-232 signals (called "circuits" in the specifications) and their pin assignments on the recommended DB-25 connectors [14] (see Serial port pinouts for other commonly used connectors not defined by the standard).

  5. COM (hardware interface) - Wikipedia

    en.wikipedia.org/wiki/COM_(hardware_interface)

    COM port (DE-9 connector). COM (communication port) [1] [2] is the original, yet still common, name of the serial port interface on PC-compatible computers. It can refer not only to physical ports, but also to emulated ports, such as ports created by Bluetooth or USB adapters.

  6. 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.

  7. D-subminiature - Wikipedia

    en.wikipedia.org/wiki/D-subminiature

    The above naming pattern was not always followed. Because personal computers first used DB-25 connectors for their serial and parallel ports, when the PC serial port began to use 9-pin connectors, they were often labeled as DB-9 instead of DE-9 connectors, due to an ignorance of the fact that B represented a shell size. It is now common to see ...

  8. File:MiniDIN-9 Diagram.svg - Wikipedia

    en.wikipedia.org/wiki/File:MiniDIN-9_Diagram.svg

    A diagram of the 9 pin Mini-DIN connector. Date: 1 June 2006 (original upload date) Source: No machine-readable source provided. Own work assumed (based on copyright claims). Author: No machine-readable author provided. Mobius assumed (based on copyright claims).

  9. 9-Pin Protocol - Wikipedia

    en.wikipedia.org/wiki/9-Pin_Protocol

    The Sony 9-Pin Protocol or P1 protocol is a two-way communications protocol to control advanced video recorders. Sony introduced this protocol to control reel-to-reel type C video tape recorders (VTR) as well as videocassette recorders (VCR).