![]() OTPROM can be programmed directly through USB port. Supports OTPROM (One-Time Programmable ROM) for USB device descriptors. On-chip USB 1.1 transceiver and 5V to 3.3V regulator The flexible baud rate generator of PL2303GC also could be programmed to generate any rate between 1 bps to 12 Mbps.įull Compliant with USB Specification v2.0 (Full-Speed) Prolific provides highly compatible drivers that could simulate the traditional COM port on most operating systems allowing the existing applications based on COM port to easily migrate and be made USB ready.īy taking advantage of USB bulk transfer mode and large data buffers, PL2303GC is capable of achieving higher throughput compared to traditional UART (Universal Asynchronous Receiver Transmitter) ports. On Prolific's site, use guest for the username and password. It has been installed successfully by our users on PCs running Windows 10, Windows. Additional drivers, provided directly by Prolific, can be found on this page. Windows 2003, XP, 2000, NT4, ME, 98SE, 98, 95 - USB-SerialAdapterDB9.zip (. Please note, these may not be the latest drivers, but they are the ones we recommend. Counterfeit IC products show exactly the same outside chip markings but generally are of poor quality and causes Windows driver compatibility issues. Download the latest drivers for your Plugable PL2303-DB9 USB Serial Adapter. ![]() The PL2303GC provides a convenient small-factor solution for connecting an RS232-like full-duplex asynchronous serial device to any USB host. Please be warned that counterfeit (fake) PL-2303HX (Chip Rev A) USB to Serial Controller ICs using Prolific's trademark logo, brandname, and device drivers, were being sold in the China market. Don't let windows update automatically - you need to pick from a list. Right click the device (in the device manager) and choose update driver navigating to the list of hardware. NOTE: Also read Windows Update overwrites my USB2SER driver.The PL2303GC is a low cost and high performance USB-to-Serial Bridge Controller. Let me pick from a list of device drivers on my computer Prolific USB-to-Serial Comm Port version version > Next. Windows will return to the Driver Properties view when the installation is completed. Select "Prolific USB-to-Serial Comm Port Version 3.3.11.152 ()", then click "Next". Click "Update Driver", then "Browse my computer for driver software".Ĭlick on "Let me pick from a list of device drivers on my computer". This dialog should open:ĭouble Click on "Prolific USB-to-Serial Comm Port (COMx)" to display the Properties. In the search results list, click "Device Manager". The easiest method to open Device Manager is to go to Windows Start, and in the search box, type "Device Manager". Perform the remaining steps with the USB to Serial device plugged in to your selected USB port. Unzip and run the installer, "PL2303_Prolific_DriverInstaller_v1210.exe". If any other version of the driver is installed, follow these instructions to install the correct version. Prolific USB to Serial Comm Port Version 3.3.11.152Ĭheck the driver version using Windows Device Manager. is an IC-Design Semiconductor Company selling USB Bridge Controller ICs, Mixed-Mode Controllers, and SOC (System-On-Chip) ICs. This issue is caused by the installation of an incorrect driver by Windows when it "searches the internet for a driver." The correct driver version for the USB to Serial Adapter is: If you still have a problem, you may try this procedure to revert to a previously known working driver. NOTE: This issue has been resolved by Prolific. Also, the PL2303 Driver Manual will provide more information about compatibility of chip versions with Windows OS Versions, including a comprehensive comparison chart. You can DOWNLOAD THIS UTILITY from Prolific to identify your chip. IMPORTANT: Driver version 3.8.12 does not support older Prolific chip versions on Windows 10 (and 8/8.1). Windows Update should install this version going forward. As of March 2017, after ongoing communication with the engineers at Prolific, the issue may be remedied with Driver VER-3.8.12.0 and higher. UPDATE: This issue is caused by the USB to Serial Comm Port Driver.
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