Application areas include usb rs232, usb serial, usb parallel, usb docking stations, and upgrades of legacy designs to usb. Qinheng electronics hl-340 usb-serial adapter usb\vid 1a86&pid 7523 select the driver for your operating system and its bit. 8 filas a replacement to hunt out that unknown device information and drivers.
In serial interface mode, ch340 supplies common modem liaison signal, used to enlarge asynchronous serial interface of computer or upgrade the common serial device to usb bus directly.
I had to decompress it twice so to speak, Unzipped your file, which left the file I mentioned earlier, When I tried to open that, windows asked which programme to use (could not browse to winrar for love nor money) so opened winrar prog` browsed winrar to desktop, found the ch341ser file (unzipped) and unzipped again, there were the drivers etc, as you mentioned.(a bit long winded I know)Thank you again for your help.Download Now USB SERIAL ADAPTER HL-340 DRIVERĪfter you overcome the driver installation. Thanks KimslandI downloaded it again, played around a bit (as you do) and finally got it. How do I open the file?I am running Vista 64 and cannot use the usb-serial adapter as mentioned in previous comments.I purchased it from Amazon, they sent me a disc with the driver on, but it doesn`t work, I think it`s because I`m using Vista 64.Many thanks for your patience. I installed Winzip as I use Winrar, just in case that was the problem but still same. I downloaded your file to my desktop, it appeared as a type of blank read file, no exe. HL-340 drivers for Vista 64HL-340 drivers: /download/CH341/CH341SER.ZIPThanks KimslandI am a complete novice so please forgive my naivity. My HL-340 USB-Serial adapter now works using the CH341 /index.htmDrivers - /download/CH341/CH341SER.ZIP.
I found a PDF for the CH340, but only found a driver link for CH341. It's Chinese but following the various links I found the download page. Searched and searched and found it was a HL-340 device.Found working drivers for HL-340 on.
HL-340 drivers!Went into Device Manager and found the VID/PID for my cable (1A86:7523). It's just weird because using the exact same cable I never had to do that before. The found new hardware wizard still came up, the drivers finished loading automatically and it was good to go. Once this was done I plugged the cable back in and it came up H元40 in the device manager instead of USB2.0-Ser! I uninstalled the driver while the cable was still plugged in, then removed the cable and reinstalled the driver. I found an alternate driver for the H元40 that had an uninstall option within the application. Please update all your Toshiba drivers from your Toshiba support pageYou may also want to download the Manual and confirm USB2 exists on any/all portsI usually do a Windows update (Custom) as well to confirm all drivers are up to datePlus it is wise to confirm all Service Packs and security Updates are completeIt also could be a Virus/Trojan causing this issue, so you may wish to do a full scanLastly 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'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.
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'd then install the H元40 driver that comes with the cable and it would work. 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'm trying to instal an H元40 USB to serial cable on a Xp Media Center OS.