Cubeternet USB to Serial DB9/DB25 Adapter Cable (4 Ft) for PC, Mac and Linux Review

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(More customer reviews)I do embedded hardware development, and frequently need RS232 for communication or debug with embedded devices. As PCs typically no longer include serial ports have become vital.
The nature of my work also means the devices I'm communicating with use a variety of baud rates, and are frequently powered up and down, causing spurious receive bits or handshake changes. Older Prolific USB-serial chipsets and especially FTDI chipsets handle such situations incredibly badly, and can easily get in a state where they do not send or receive any more serial traffic until the USB-serial adapter is unplugged and replugged - frustrating and time-consuming. The newer Prolific chipset on this device appears solid, and I've not yet lost serial traffic due to baud changes or power cycles of serial devices.

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Manhattan USB to RS232 converter - Serial adapter - USB - RS-232 Review

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(More customer reviews)This thing is loaded with cd software which is windows 7 compatible. It has a lifetime warranty and it works I used it to connect a car computer scanner to my compter for updates and it worked the first time.

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USB to RS232 DB9 Serial Cable + DB25 Pin Adapter / Port Adapter Converter for GPS, PDA, PC, Modem Review

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(More customer reviews)This item comes with absolutely no instructions for installation. The enclosed CD contained drivers to many products and was equally useless. I only found the correct driver after I called a company whose README file was on the CD who no doubt had many calls from others about the same product. The company had no affiliation with the actual product but they were kind enough to help me identify the item and I was then able to install a driver.
The unit does work properly now that the correct driver is installed but I don't envy the mere mortal that purchases this device. It is ridiculous that there are no instructions. So in an effort to help anyone that has purchased this device (or plans to purchase it) here are the instructions to install the driver.
When the unit is plugged in identifies itself as USB SER! The unit has a barely legible HL-340 molded on the side of the DB9 connector. HL-340 is the part number and with that you can find the driver installation executable (HL-340.exe) for the device under the folder USB-232 on the USB driver mini CD that comes with the device.
Don't expect to tell Windows to search the CD for the device driver - it won't find it because the driver installation is an .exe file that you need to run manually first. Simply run USB-232\HL-340\HL-340.exe first and then plug the device in.
After connecting the device, Windows will prompt you to install the driver. Follow the usual Windows prompts to install the driver software automatically (since the driver software was already installed on the system in the previous step). The driver identifies itself as USB Serial CH340 to add further confusion.
You will get warnings about the driver not having passed Windows Logo testing. You can ignore those warnings and install the driver anyway.
The com port should appear in the com port menus of whatever software that tries to use a com port - in my system it appeared as COM7 and this will probably vary on other systems.
Once the device is installed it works properly so I can't know it from that standpoint. It was just an ordeal to get it working. I hope that this helps someone.

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DB9 Male/Male Mini Gender Changer (Coupler) Review

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(More customer reviews)As title stated, but needed it for work and got it quickly, and in great condition. It's ashamed that postage has to cost so much. No complaints on product or merchant thought - great service.

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