USB Driver USB Driver Software 
The PL2303TA is a USB to Serial Bridge Controller from Prolific. The chipset provides USB to straight-through RS232 serial connectivity at baud rates up to 128Kbps. This allows you to use a USB port in your computer to a RS232 type devices such as point-of-sale terminals, serial modems as well as industrial equipment.
USB-Serial Port adapter (RS-232) in Ubuntu Linux
There are two other articles on a serial port adapter for Windows. Below is the instructions for Linux and how to connect your serial adapter while using Linux. This should work for most people using Linux and a serial adapter or usb to rs232 driver which is being discussed.
Realtek RTL8187L Driver
Here you will find the Realtek RTL8187L Driver to install. This is the driver for the Realtek RTL8187L adapter card. These are the latest drivers. Ensure that you have the correct driver for your card. There are a number of Realtek cards much like the RTL8187L which sound similar such as the Realtek RTL8185L which can also be found on this website.
FT232R USB UART Driver
The FT232R USB driver is a bit of a complicated install. The screenshots below will give you direction with regards to installing the driver the correct way. This means that you first have to uninstall the driver, disconnect from the internet and then install the driver again. The FT232R USB drivers below need to be extracted to an area on your computer you can find.
HTC MTP Device Driver Win 7
If you have an HTC mobile phone then you can download this driver for the HTC MTC device. Note that this is for Windows 7. If you are looking for a HTC sync manager then you need to look here for the HRC Sync application on this website.
SAMSUNG Android USB Device Driver ¸¸.•*¨*•
This is the SAMSUNG Android USB Device Driver version 5.28.2.1. See the instructions for this driver for the Samsung mobile phone listed below with the file. Note that this file is for a Windows operating system.
Samsung Mobile Phone USB Driver
The Samsung Mobile Phone USB Driver has been added below for installation. This software contains all the files for installing the Samsung USB Driver for Mobile Phones. If it has been installed, updating (overwrite-installing) may fix problems, add new functions or expand functions. The program is language independent and can be used with any language system.
Prolific USB to Serial Driver
There are a number of Prolific Serial drivers and these have been listed below. There is also an explanation here (USB to RS232 Driver) which also uses a Prolific USB driver. If the Prolific USB to serial drivers below do not work then see the USB to RS232 driver for more information as it uses more than one option.
USB to RS232 Driver
This is the RS232 driver for the USB adapter. In order to setup the driver you need to download the correct USB driver file and run the installer in the file. Once this has been installed you then need to reboot the computer. Once this is done plug the USB into the adapter.
HTC USB Modem Driver
You can find the HTC USB Modem Driver below. This is the mobile file for the HTC modem. This is the latest driver which was released for the Microsoft platform. The driver is very small and you can download it below. This runs on all the Windows operating systems.
CP2102 USB to UART Bridge Driver
The CP2102 USB to UART Bridge driver you can download below. Silicon Labs who manufactures the CP2102 chipset has stated that this chip should not be used in new designs and to look at other options. The CP2102N is now the recommended chipset instead of the CP2102 which they also make. The drivers for the CP2102 USD to UART bridge are royalty free and it is plug and play compliant.
CSR Bluetooth Driver
These are the CSR Bluetooth driver which you will find here. There is a limited amount of use as these are mainly for older products. You will note that there are a number of options from 32bit as well as the 64bit of the range of drivers. You will also note that the CSR Bluetooth drivers listed below is for a remote control device, CSR hands free audio driver, CSR Bluetooth filter driver. These are mainly the CSR drivers which you will find.
TL-WN722N Troubleshooting
The TL-WN722N troubleshooting guide as well as the TL-WN722N driver has also been added below. You will find the most common problems with the TL-WN722N which is a wireless adapter from TP Link. See which could be your problem if you are not connecting to the internet or to a device within your range. the indoor range with the TL-WN722N is not that far and you may need a repeater to extend the range when indoors in a large house.
RS232 to USB driver
If you wish to switch from the RS232 to USB then it will require a number of changes. There are a number of RS232 to USB adapters on the market. You can see below the different drivers for the different hardware that is available on the market. There are only three major hardware suppliers for the RS232 adpater. You can see these listed below. These are the USB driver.
RS232 to RS485 Port Troubleshooting
If you want to test the RS232 port then you will need to follow the steps as detailed below. This is an easy way to test the RS232 to an RS485 port. These ports are the additional ports that you will find when you connect your RS232 port to your USB port. See the troubleshooting test below as well as the RS232 troubleshooting guide on this website as well. The test is similar when checking the drivers.
USB Serial RS232 Troubleshooting
If you are having problems with your USB to RS232 serial connection then troubleshooting it will help. We will have to complete a loop-back test to confirm that there is a connection. This will tell you if there is a connection as well as is it a UART driver problem or is it a hardware issue that has been overlooked. This will work with most USB serial RS232 adapters which you will find on the market.
Serial Port Cards
These are the serial ports from different manufactures. Some prefer to have a PCI card rather than an adapter. These serial port cards will allow you to have more COM ports on your computer than what you would normally have available on todays computers. You can see a list of USB to serial adapters on this website as well as the the list of USB to Serial also on here.
USB to Serial Driver
If you are looking for a USB to Serial driver then you will first need to know what processor the convertor is using. You will also need to know which type of serial device you are trying convert to. This can be a USB to Serial RS232 which covers the processors from the MosChip, FTDI as well as Prolific. There is also the USB to Serial RS485 and RS422 which covers the same Prolific processor as well as FTDI and SilLabs.
CP2104 USB to UART Driver
The CP2104 USB to UART Driver is added below and is widely used on a number of UART bridges. The adapter we are covering here is the module which is a USB adapter or programmer for the ESP01 which is based on ESP8266 WiFi micro-controller. This module uses the CP2104 USB serial port chip and will also add the ESP01 automatic download circuit. This WiFi module will automatically enter the download mode.
UC00C (CH340) USB to UART Converter
The UC00C (CH340) USB to UART Converter is a well known low cost alternative to the popular FTDI USB to UART converter. It much like other works with both 3.3V as well as a 5V system. The UART driver has also been added below. The serial communication in particular the UART (Universal Asynchronous Receiver and Transmitter), is one of the most commonly used communication protocol for computers. There are certain versions of the Arduino main boards have USB to UART converter built-in.
Cytron USB to UART Converter
This is the Cytron USB to UART Converter overview. You can see further down how this works as well as it driver. This is similar to the RS232 adapter as well as the FT232R USB UART driver which is also on this website. The Cytron USB to UART converter driver is also listed below for download. The serial communication way of communication is the most popular interface which is used between devices and this applies to the micro-controller as well as the computer. The UART port is one of those serial interfaces.
USB to Serial Adapter Drivers
These are the USB to Serial drivers. You can find all of these USB to Serial drivers on this website. There are also other posts such as the USB drivers as well as the UART drivers which are also listed on this website.