Windows 10: UX31A low transfer speed via USB 3.0

Hi dear friends,mostly kind friends on any forums. I'm having issues with this laptop transferring files to external HDD 8 TB which on desktop PCs gives me transfer of up to 100-120 MB/s constantly. On laptop is not HDD it's some sort of an SSD so that should not be an issue. Ofc is not issue with external HDD since it gives me max speed. All the drivers are installed I suppose okay (device manager pics). There are no official drivers on website for laptop,so only W10 drivers are installed. But 21MB/s is not even USB 2.0 transffer rate. So can anyone help me resolve this issue and get max speed over this usb 3.0?

:)

 

USB 3.0 transfer speed drops to 0 only on one port. USB port and external drive are NOT defective.

I have a Dell XPS 13 laptop with two USB 3.0 ports. I connect a Seagate expansion drive to the left USB port and transfer a 4GB test file. It transfers about 1GB at 150MB/s and then transfer speed drops to 0. Then it picks up again after 3-4minutes, then
drops again intermittently.

I connect the same Seagate drive to the right USB port. The same 4GB file transfers with a constant speed of approximately 150MB/s. Thus the Seagate drive is not defective. Perhaps the left USB port is defective.

I connect a Sandisk 128GB flash drive to the left USB port (that is now suspected defective). It transfers the same 4GB file with constant 130MB/s speed, no speed drops!

Each step is reproducible 10x.

I am out of my wits here.

 

USB transfer speed restricted to 1MBps

Thanks for showing interest in my issue.

1. MP3, movies, and all sorts of files.

2. Computer to Pen drive & vice-versa.

3. No, no updates.

 

USB transfer speed restricted to 1MBps

Hi,

Allow us to ask the following questions so we can properly address your concern:

• What type of files were you trying to transfer?
• When you say USB transfer speed, are you referring to the speed when transferring the files from that computer to another device, or the other way around?
  
• Did you do any updates to your computer prior to this issue? Was it working fine before?

We will wait for your reply.

Regards.