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Question about slow USB 2 transfer speeds.

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mrwoof:
Question about USB 2 transfer speeds. Device i3/4Gb   W7.
Copying a video file (720p Mp4 -935Mb ) from the laptop to a Micro SD card via adapter to a USB 2 port.
Speed settled at 8 MB/second. Speed seems slow for USB 2 .
Have attached  image with SD spec. Why is it so slow?

Boggin:
There are some tips in this article for speeding up USB transfer speed - https://www.easeus.com/resource/fix-slow-usb-transfer-speed.html

mrwoof:
What speeds should I expect ?

Boggin:
I think it's up to 35MB for USB 2 - have you tried formatting the USB to NTFS as the article suggests ?

I did come across an article which suggested going into Device Manager - expanding USB Controllers - right clicking on an USB Root HUB and selecting Properties/Advanced would give the data rate, but on both my Win 7 and Win 10 machines, that just said it was working at full or high speed.

If your port is defective then that may report something else.

However, there is a Reset Hub button under Advanced which may improve things.

You may need to do that for each Hub so that you do it for the Hub that is being used,

mrwoof:
Hi Boggin
I read the article you referred to.
Conversion made little difference / reset hub & update likewise. Tried different ports, nada.
Then using a USB 3 port, write value rose to 12 Mbs compared to 8+ on V 2.
 Attch USB 2 write speed of 17.5 Mbs.
Have tried various speed tests, however they all give different values when I re run them!
Will submit my data to support at "Platinet"as packaging state "up to 90Mb/s, a Polish outfit.
Question, does the nature of the data, (eg .mp4 .doc etc) affect transfer speed?

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