I tried the older driver available here:http://www.prolific.com.tw/US/ShowProduct.aspx?p_id=223&pcid=126And this seemed to work for Windows 11. Weird that an old driver works better than the latest one.I have the PL-2303 TA chipset. Answer from ejohanson on techcommunity.microsoft.com
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Sabrent
sabrent.com › collections › 10percent › usb to rs-232 db9 serial 9 pin adapter (prolific pl2303)
USB to RS-232 DB9 Serial 9 pin Adapter (Prolific PL2303) - Sabrent
USB to RS-232 DB9 Serial 9 pin Adapter (Prolific PL2303)
· Cable Length: 1 ft cable · Side Connectors: Male Thumbscrews · Supports remote wake-up and power management · Supports automatic handshake mode · No IRQs, no IRQ conflicts ·
(4.4)
Price   $11.99
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Amazon
amazon.com › pl2303-usb-serial › s
Amazon.com: Pl2303 Usb To Serial
Discover reliable USB to serial solutions. Browse DB9 adapters, TTL converters, and cables compatible with multiple operating systems.
Discussions

PL2303 issues (Prolific USB to Serial Drivers) Win 11
I have come across an issue that I don't if anyone has come across and found a fix? I have a few handheld radios that I need to update the frequencies... More on techcommunity.microsoft.com
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70
2
November 15, 2021
Note: How to not get scammed with Prolific (PL2303) USB
EEVblog Captcha · We have seen a lot of robot like traffic coming from your IP range, please confirm you're not a robot · This security check has been powered by · CrowdSec More on eevblog.com
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June 16, 2011
[HELP] PL2303 drivers for linux or alternative
According to https://stackoverflow.com/a/49106819 the PL2303 driver is already in the mainline kernel. There is a pretty good chance it is even already compiled into yours. Are you sure you don't have a `/dev/ttyACMx` or `/dev/ttyUSBx` (where x is any number) device showing up when you plug it in? More on reddit.com
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0
September 14, 2023
Windows 11 & Prolific USB Drivers
So it is supported then.... It just doesn't come with the drivers in the security rollup. More on reddit.com
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29
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October 13, 2021
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Plugable
plugable.com › products › pl2303-db9
Plugable USB to RS-232 DB9 Serial Adapter (Prolific PL2303GT Chipset) ~ Plugable Technologies
May 8, 2019 - Powered by USB; no external power needed · Legacy Support— Add a 9-pin DB9 RS-232 serial port to any modern computer, replaces built-in or PCIe serial adapters, recommended for use with a serial cable or NULL modem cable · Compatibility ...
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App Store
apps.apple.com › us › app › pl2303-serial › id1624835354
PL2303 Serial App - App Store
PL2303 Serial Driver is a system extension provides the capability to access Prolific's low cost and high performance USB-to-Serial Bridge Controller. Prolific provides a convenient small-factor solution for connecting an RS232-like full-duplex ...
Rating: 0 ​
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Manhattan Products
manhattanproducts.us › home › usb-a to serial converter, 45 cm (18 in.)
Manhattan PL-2303 USB to Serial Converter (205146)
USB-A to Serial Converter, 45 cm (18 in.)
Easily connect serial devices through a USB portMost modern computers and laptops don't have RS232 (DB9) ports, making the use of legacy peripherals and high-tech devices which connect with COM ports almost impossible. The Manhattan USB to Serial Converter — with its serial RS232 (DB9) port and Prolific PL-2303 chipset — easily expands a single USB port to connect and support serial modems, barcode scanners, digital cameras, card readers, Ham/Amateur Radios, GPS, CNC machines, telescopes, embroidery machines, fuel injection controllers, PDUs, network switches and other devices.Quality Construc
(4.5)
Price   $13.99
Find elsewhere
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Office Depot
officedepot.com › a › products › 962811 › StarTechcom-USB-to-Serial-Adapter-Prolific
StarTech.com USB to Serial Adapter - Prolific PL-2303
We are sorry, but Office Depot is currently not available in your country · Please contact the site administrator · Reference Code: 1
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Varvayanis
varvayanis.com › miscellaneous › Software & Drivers › Prolific PL2303
Prolific PL2303 USB-to-Serial Comm Port drivers
GUID: 618D450A-B26A-4CB2-ABCA-F59C209B312E PL2303GC / GC_Q20 / GS / GT / GT_2AB / GL / GE / GR / GD:
Address   185 Fairview Lane, 95370, Sonora
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Plugable
plugable.com › plugable technologies › usb serial adapter drivers (prolific)
USB Serial Adapter Drivers (Prolific) ~ Plugable Technologies
October 1, 2020 - Drivers for the Plugable USB serial adapter using an authentic Prolific chipset, model PL2303-DB9.
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Prolific USA
prolificusa.com › products › cables › usb to serial/uart cables › te-c0023 usb to rs232 serial (db-9 male)
TE-C0023 USB to RS232 Serial (DB-9 Male) | Prolific USA | IC Design & Manufacturing
December 12, 2024 - Our USB to serial bridge cables provide seamless communication between serial devices and Windows, Mac, Android and Linux platforms over their USB ports. Built round the Prolific PL2303HXD chipset, these cables support all the features of that ...
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EEVblog
eevblog.com › forum › reviews › note-how-to-not-get-scammed-with-prolific-(pl2303)-usb-serial-adapters
Note: How to not get scammed with Prolific (PL2303) USB
June 16, 2011 - EEVblog Captcha · We have seen a lot of robot like traffic coming from your IP range, please confirm you're not a robot · This security check has been powered by · CrowdSec
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DriversCloud
driverscloud.com › en › services › GetInformationDriver › 72590-84992 › delock-pl2303-prolific-driverinstaller-v1200zip
Driver sheet - DriversCloud
PL2303_Prolific_DriverInstaller_v1200.zip · File size · 7.14 Mo · Manufacturer · Delock · System · Windows 10-64 , Windows 10-32 , Windows 8.1-64 , Windows 8.1-32 , Windows 7-64 , Windows 7-32 · Online date · 01/06/2019 · Beta status · no · OEM status · no · MD5 of the driver · 80a32f6949f99637ba4623e2112f75e2 · Driver category · Other · Compatible hardware · Prolific USB-to-Serial Bridge ·
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GitHub
github.com › theAmberLion › Prolific
GitHub - theAmberLion/Prolific: Windows 11 compatible drivers for older Prolific PL2303 USB to RS232 cables (including fake chips) · GitHub
Windows 11 compatible drivers for older Prolific PL2303 USB to RS232 cables (including fake chips) - theAmberLion/Prolific
Starred by 100 users
Forked by 30 users
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Prolific USA
prolificusa.com › products › chips › i/o products › new! usb to uart g series › pl2303gs usb to full uart bridge controller
PL2303GS USB to Full UART Bridge Controller | Prolific USA | IC Design & Manufacturing
June 25, 2019 - The PL2303GS is a low cost and high performance USB-to-Serial Bridge Controller. The PL2303GS provides a convenient small-factor solution for connecting an RS232-like full-duplex asynchronous serial device to any USB host.
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CDW
cdw.com › product › startech-usb-to-serial-adapter-prolific-pl-2303-com-port-retention-us › 1240909
StarTech USB to Serial Adapter - Prolific PL-2303 - COM Port Retention - USB to RS232 Adapter Cable - USB TAA - ICUSB232PRO - USB Adapters - CDW.com
A time-saving and convenient USB/Serial solution, the adapter retains assigned serial COM port values in nonvolatile memory, allowing the same values to automatically be assigned to the adapter serial port if disconnected and reconnected, or ...
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Plugable
kb.plugable.com › serial-adapter › how-to-install-prolific-serial-port-drivers-on-a-windows-7-fresh-installation
How-To: Install Prolific Serial Port Drivers on a Windows 7 ...
May 14, 2026 - After logging back into the desktop, reconnect the serial adapter. Open the Start Menu, search for and launch "Device Manager," and expand the "Ports (COM & LPT)" section. Double-click on the "Prolific PL2303GT USB Serial COM ...
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Office Depot
officedepot.com › a › products › 163089 › StarTechcom-USB-to-Serial-Adapter-Prolific
StarTech.com USB to Serial Adapter Prolific PL 2303 3 ft 1m DB9 9 pin USB to RS232 Adapter Cable USB Serial - Office Depot
StarTech.com USB to Serial Adapter - Prolific PL-2303 - 3 ft / 1m - DB9 (9-pin) - USB to RS232 Adapter Cable - USB Serial
TECH SPECS 3 feet 91 cm Prolific ... peripherals ADD LEGACY FUNCTIONALITY The USB to Serial DB9 adapter lets you connect DB9 RS232 serial devices to your device through an available USB port as though the computer offered a DB9M ...
Price   $26.99
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Dell
dell.com › home › support home › product support › driver details
Prolific USB to Serial Controller Driver | Driver Details | Dell US
This package contains the Prolific USB to Serial Controller driver. Prolific USB to Serial Controller driver is the software that helps your operating system to communicate with USB Serial Port devices.