Rs232 and usb are completely different protocols; you cannot simply connect them passively. There has to be some electronics in there to bridge the protocols. When USB is involved, there must be a host device. With USB-rs232 converters(to hook an rs232 device up to a USB port), the computer is the host. How to Convert Serial Port Printers to USB. You want to plug a printer into the USB port of your PC, but all you have are older serial cable printers. Instead of using your company's resources, which are probably limited, you decide to buy USB-to-Serial adapters. These adapters convert serial connections, such as.
'I have an 8 GB Transcend flash drive. When I plug it in my laptop for data transfer, it is not even detected and I can not see it in My Computer. Why did this happen and is there any fix that I can try to get the USB device recognized?' Five Steps to Get USB RecognizedHave you ever run into a similar USB device not recognized issue? The symptoms of the problem vary in different situations. You may. Receive a error in the lower right corner with 'The last USB device you connected to this computer malfunctioned, and Windows does not recognize it.'
Error message. See (device descriptor request failed) error in device manager.
Get no error message but just find the in my Computer.1 - Check If the USB Device is Recognized on Another Laptop.If it is still not detected, it suggests that the USB device might be corrupted. Then you will need to.If it is detected, move to the next step to check and fix the problem.
2 - Run Device Troubleshooter.1) Go to Start Control Panel search 'troubleshooter' and then click 'Troubleshooting' Hardware and Sound Configure a Device.2) Follow on-screen instruction, and click on Apply this fix if any problem is found.This helps if USB device not recognized happens because of Windows miss other important updates hardware or due to software issues. If it doesn't work, move to step 3. 3 - Uninstall and re-install USB controllers1) Open Device Manager.2) Expand Universal Serial Bus controllers. Right-click a device and select Uninstall. Repeat for each device.3) Restart your PC and your USB controllers will automatically re-installed.Your computer will then recognize the USB device if the issue occurred because the currently loaded USB driver has become unstable or corrupted.
And if the problem still exists, proceed to step 4. Why choose EaseUS Data Recovery Wizard?' EaseUS Data Recovery Wizard is the best we've seen. It's far from perfect, partly because today's advanced disk technology makes data-recovery more difficult than it was with the simpler technology of the past, but it's fast and efficient.' —'The first thing you'll notice about EaseUS Data Recovery Wizard Pro is that its interface is very clear and uncluttered, with only a small collection of self-explanatory controls. You won't find lots of extra options hidden in a system of hidden menus, either; what you see really is what you get.'
—'Recover lost files, even after deleting a partition or formatting your drive.' Why cannot I recover 2GB data for free?It is recommended to check the version installed is Free or Trial because they are different versions.Trial has data preview function but cannot save any files, while the version enables to recover 2 GB files. The default free space is 500 MB and you may share the product on social media to get another 1.5 GB. Why cannot the recovered files be opened?A file is saved as 2 parts on the storage device: directory info (which is comprised by file name, time stamp and size info, etc.) and data content.If the files with original file names and folder structures cannot be opened, one possible reason is the corrupted directory info. There is still a chance to recover the data content with the method in our software. Why isn't it suggested to recover the files back to the original drive?The storage structure of the lost files would be altered or damaged by any changes on the drive.
If you save the recovered files back to the same drive, the original data structures and data content would be corrupted or overwritten, which causes permanent data loss. So you should prepare another disk to save the files. How can I check whether my data is recoverable or not before purchase?The version helps you save 2GB files to better verify the recovery quality of our product before purchase. How long does it take to scan the drive?It strongly depends on the capacity of your hard drive and the performance of your computer. As reference,most drive recoveries can be completed in around 10 to 12 hours for a 1-TB healthy hard drive in general conditions.