- I found out in device manager that the driver 'at91 usb to serial converter' has yellow mark with it. I doubled click and found out that it has code10 message. The driver first was installed on com3 port.
- Download the latest driver, firmware, and software for your HP USB to Serial Port Adapter.This is HP's official website to download drivers free of cost for your HP Computing and Printing products for Windows and Mac operating system.
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Scan performed on 4/25/2017, Computer: Sony VGC-JS51B_P - Windows 7 64 bit
Outdated or Corrupted drivers:8/21
USB to Serial (Prolific 2303) Device Cannot Start (Code 10) in Windows 8/8.1/10 Or the duplicate answer on Super User page Gigaware USB to serial adapter not working on Windows 8. I found that this was needed when using the ADAfruit USB-to-TTL adapter cables. Use the links on this page to download the latest version of AT91 USB to Serial Converter (COM3) drivers. All drivers available for download have been scanned by antivirus program. Use the links on this page to download the latest version of AT91 USB to Serial Converter (COM23) drivers. All drivers available for download have been scanned by antivirus program.
Usb To Serial Converter Radio Shack
| Device/Driver | Status | Status Description | Updated By Scanner |
| Motherboards | |||
| Intel(R) Xeon(R) Processor E5 Product Family/Core i7 Power Control Unit 0 - 3CC0 | Up To Date and Functioning | ||
| Mice And Touchpads | |||
| Wacom Wacom Router Mouse | Up To Date and Functioning | ||
| Usb Devices | |||
| TooDis HMS30C6001 Reset Driver | Corrupted By At91 Usb To Serial Converter Com3 | ||
| Sound Cards And Media Devices | |||
| NVIDIA NVIDIA GeForce GT 550M | Corrupted By At91 Usb To Serial Converter Com3 | ||
| C-Media Standardgameport | Up To Date and Functioning | ||
| NVIDIA NVIDIA GeForce GT 540M (Microsoft Corporation - WDDM v1.2) | Corrupted By At91 Usb To Serial Converter Com3 | ||
| Network Cards | |||
| Ralink Ralink RT5390R 802.11bgn Wi-Fi Adapter | Corrupted By At91 Usb To Serial Converter Com3 | ||
| Keyboards | |||
| Microsoft Keyboard Device Filter | Outdated | ||
| Hard Disk Controller | |||
| Silicon Integrated SiS PCI-IDE-Controller | Up To Date and Functioning | ||
| Others | |||
| Lucent Lucent Win Modem | Up To Date and Functioning | ||
| Intel Intel(r) AIM External Flat Panel Driver 4 | Up To Date and Functioning | ||
| Point Grey Research Texas Instruments 1394 OHCI Compliant Host Controller | Up To Date and Functioning | ||
| Intel(R) 82801EB Ultra ATA Storage Controllers - 24D1 | Up To Date and Functioning | ||
| ACEECA Palm Handheld | Up To Date and Functioning | ||
| Western Digital My Net N900 Router Storage | Corrupted By At91 Usb To Serial Converter Com3 | ||
| Cameras, Webcams And Scanners | |||
| Intel Canon EOS 500D | Up To Date and Functioning | ||
| Video Cards | |||
| Intel Video Controller (VGA Compatible) | Up To Date and Functioning | ||
| Input Devices | |||
| Lenovo ThinkPad USB Travel Mouse (HID) | Up To Date and Functioning | ||
| Port Devices | |||
| Sony Ericsson Sony Ericsson 750 USB WMC OBEX Interface (COM6) | Corrupted By At91 Usb To Serial Converter Com3 | ||
| Monitors | |||
| Sony Digital Flat Panel (1024x768) | Up To Date and Functioning | ||
| Mobile Phones And Portable Devices | |||
| Acer NOKIA | Corrupted By At91 Usb To Serial Converter Com3 | ||
I'm trying to use a Gigaware USB -> Serial adapter that worked fine on Windows XP on Windows 8. It's not working and I get
in device manager. It says the drivers are up to date. What should I do?
7 Answers
If this is your adapter - then it is based on Prolific PL2303 chipset and your best bet would be to use the drivers from the chipset manufacturer. But if your adapter contains an old revision of the chip - it is just not compatible with Windows 8:
Windows 8 is NOT supported in PL-2303HXA and PL-2303X EOL chip versions.
This tool WILL work if you are receiving the (Code 10) error. Despite all the comments about it not working on Windows 8/8.1, there is a simple way to make it work: Fake PL2303 – how to install on Windows 8.1
Peter MortensenRs232 To Usb Adapter
You need to downgrade the driver to the 2008 3.3.2.102 version and choose it specifically as per this page:
Or the duplicate answer on Super User page Gigaware USB to serial adapter not working on Windows 8.
I found that this was needed when using the ADAfruit USB-to-TTL adapter cables.
The only issue is that every time you remove the device you will have to go through the same painful exercise as Windows doesn't retain the driver association details.
Peter Mortensen
Download this driver from the Windows Update Catalog. Then manually add the driver using Device Manager.
Peter MortensenI also download the driver listed (AMD64_X86-en-20357822_453c563f64689a47c9be3972b95db24900db3798.cab)above from Microsoft and manually added it. You must remove the Svk2pl.inf from the .cab, disable the device, select the .inf file. After you are done the will show up as Gigaware USB to Serial Cable (COMx) x=port. If you move the connection to another USB port you have to make the same change or you will still have the problem. The device works great now. I used the PL203CheckChipVersion.exe to verify my chip version, I am using PL-2303 XA / HXA chip. This tool will not work if you are receiving the (Code 10) error.
The adapter you are referring to is not compatible with Windows 8, and even updating the drivers will not make it work either since it most likely has the old version of the Prolific chipset. A solution would be using an FTDI based USB-to-serial converter which has better drivers and is compatible with Windows 8.
Peter MortensenI also just had this problem, and I downloaded the 'Windows Update Catalog' after uninstalling and reinstalling driver. I went to Device Manager and updated the driver with the file I downloaded.
It works great now.
Peter Mortensenprotected by Community♦Jul 28 '15 at 11:25
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