World's most popular driver download site. Other Companies HL-340 usb to serial adapter Free Driver Download for Windows XP, 2000, ME, 98SE, 98 (1075448) - hl-340_driver.zip Driver Guide. USB to serial drivers for most serial RS232 devices. Download drivers for most types of USB to serial adapters and converters. The HL-340 USB to Serial Adapter. “Fixing the PL-2303 USB to Serial Drivers” Download the WOT Box Software Note. Drivers Hi I am trying to install a gadget serial driver 2.4 on windows 7 and it comes as unknown.

I'm trying to instal an HL340 USB to serial cable on a Xp Media Center OS. I've used these cables a hundred times before, and usually once plugged in it will come up in the device manager under COM and LPT ports. I'd then install the HL340 driver that comes with the cable and it would work. Thing is, with this computer I'm trying to use it on now, it's coming up in the device manager as USB2.0-Ser!, and there's no driver I can find that will work. I've taken the cable and plugged it into another computer running Xp Home and it comes up like it should (COM and LPT ports) and works great.

I know it's not a bad cable. Please update all your Toshiba drivers from your Toshiba support page You may also want to download the Manual and confirm USB2 exists on any/all ports I usually do a Windows update (Custom) as well to confirm all drivers are up to date Plus it is wise to confirm all Service Packs and security Updates are complete It also could be a Virus/Trojan causing this issue, so you may wish to do a full scan Lastly check in CMOS (usually DEL or some other keypress on system startup to get into CMOS setup) Check all USBs are enabled, there may be other options on your USB settings as well. I ended up solving my issue. I found an alternate driver for the HL340 that had an uninstall option within the application.

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I uninstalled the driver while the cable was still plugged in, then removed the cable and reinstalled the driver. Once this was done I plugged the cable back in and it came up HL340 in the device manager instead of USB2.0-Ser! The found new hardware wizard still came up, the drivers finished loading automatically and it was good to go. It's just weird because using the exact same cable I never had to do that before. Issue resolved. Thanks for the help once again Kimsland! HL-340 drivers!

Went into Device Manager and found the VID/PID for my cable (1A86:7523). Searched and searched and found it was a HL-340 device. Found working drivers for HL-340 on WinChipHead.com. It's Chinese but following the various links I found the download page. I found a PDF for the CH340, but only found a driver link for CH341. Downloaded, installed and VOILA!

My HL-340 USB-Serial adapter now works using the CH341 drivers. Winchiphead.com/index.htm Drivers - winchiphead.com/download/CH341/CH341SER.ZIP. HL-340 drivers for Vista 64 HL-340 drivers: winchiphead.com/download/CH341/CH341SER.ZIP Thanks Kimsland I am a complete novice so please forgive my naivity. I downloaded your file to my desktop, it appeared as a type of blank read file, no exe. I installed Winzip as I use Winrar, just in case that was the problem but still same. How do I open the file?