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Historically most personal computers had a built-in D-sub serial RS port, also referred to as a COM port, which could be used for connecting the computer to most types of serial RS devices. This article needs additional citations for verification. October Learn how and when to remove this template message. Some chip models have drivers installed by default, including FTDI, while drivers for other chip models must be manually installed e. Adapters for converting USB to other standard or proprietary protocols also exist; however, these are usually not referred to as a serial adapter. However, the characteristics of the virtual COM port are not exactly the same as a real internal COM port, mainly due to data latency ; which means that if very sensitive and precise data transfer is required, the USB to serial adapter might be unreliable and not a desired solution.

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From Wikipedia, the free encyclopedia. Retrieved 11 December Views Read Edit View history.

Articles needing additional references from October All articles needing additional references. A USB adapter is a type of protocol converter which is used for converting USB data signals to and from other communications standards.

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Unsourced material may be challenged and removed. Languages Dansk Edit links. Retrieved 14 October Please help improve this article by adding citations to reliable sources.

Retrieved from ” https: Historically most personal computers had a built-in D-sub serial RS port, also referred to as a COM port, which could be used for connecting the computer to most types of serial RS devices.

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The primary application scenario is to enable USB based computers to access and communicate with serial devices featuring D-Sub usually DB9 or DB25 connectors or screw terminals, where security of the data transmission cp21101 not generally an issue. By using this site, you agree to the Terms of Use and Privacy Policy.

October Learn how and when to remove this template message. This article needs additional citations for verification. USB serial adapters can be isolated or non-isolated.

Since many serial devices with a RS, RS or RS port are still in use and even still produced today, the disappearance of the serial COM cp21011 from personal computers has created a need for the USB to serial adapter. However, the characteristics of the virtual COM port are not exactly the same as a real internal COM port, mainly due to data latency ; which means that if very sensitive and precise data transfer is required, the USB to serial adapter might be unreliable and not a desired solution.

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This page was last edited on 12 Decemberat Adapters for converting USB to xp2101 standard or proprietary protocols also exist; however, these are usually not referred to as a serial adapter. The USB processor sends the processed USB signals to a serial driver chip which applies the correct voltages and sends the processed data signals to the serial output.

USB adapter

For the computer to be able to detect and process the data signals drivers must be installed on the computer. The non-isolated version has no protection against static electricity or voltage surges, which is why this version is usually recommended for only non-critical applications and at short communication ranges. Some chip models have drivers installed by default, including FTDI, while drivers for other chip models must be manually installed e.