My original 200 series unit back about 12-13 years ago was a 2.0 interface. I don't think Garmin has produced a USB 1.x unit since the very early days. I can't get a reliable connection with GE since Garmin won't support C3 on Mac. (DriveSmart55, Nuvi 3597) I've never updated the DS with the computer, Mac. I suspect the cable with the White slug is USB2, despite the color. What can you tell us about your PC? Make, model, RAM, hard drive size, how much free space is on the hard drive, etc.? sometimes you can tell what you have by the color of the plastic on the rectangular end USB 1.x = White USB 2.0 = Black, sometimes white USB 3.0 = Blue.
Each of these are capable of transferring at different speeds. USB cables there are no less than four types, versions 1, 1.1, 2, and 3. On the subject of ports, do you know what the ports are on your computer? Again they can be USB 1, 2, 3 or a sub-category. Is your hub USB 1,2, 3 or some sub-category of these like 3.1? Personally, I don't a hub should ever be in the transfer "path" if speed of transfer is a serious consideration. Like many USB devices, hubs have speed characteristics. You mentioned a possible bad hub try plugging the Garmin directly into a USB port. AT&T with a DSL connection claims almost 800Kbps minimum! But you have several things that need to be addressed, starting with your connection speed, which you say is 100K (? units). I really doubt that the Garmin programmers are at issue but having said that we don't know much about your hardware.
GARMIN EXPRESS STUCK ON DOWNLOADING FILE HOW TO
Garmin should hire some programmers that know how to code and fire the ones they have now. I notice that the download speeds, time remaining and percentage done are never correct. When it disconnects I just continue the next day. It will download for a while and then disconnect. I have been downloading for a few hours each day.
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