windows usb drive not detected with hub, but ok if directly into laptop port

[ScoutDaDog]

A/C powered USB-3 drive no longer detected when connected through powered USB-3 hub. It had been working fine for weeks, An old USB-2 drive still shows up, as do mouse & keyboard on the same hub. The "missing" drive works just fine if connected directly into the laptop USB-2 port, or into the USB-3 PC card that the hub is connected to. I'm running Windows 8.1 on a Dell E-4620.

 

[Darkbreeze]

Have you tried the device on any of the other ports on the hub, or just the one?

 

[ScoutDaDog]

Have you tried the device on any of the other ports on the hub, or just the one?

Thanks for responding.
Yep! The hub is an "AmazonBasics 7 Port USB 3.0 Hub with 12V/3A power adapter" I've tried several of the "regular" ports, and one of the "high power" ports on the end, even though the drive has its own power supply. The really weird thing is, right after it failed to appear after a restart, Windows "opened" the drive and showed the top-level folders. When I tried to open a folder, it said something like "The device is not reachable". It seemed to remember that the drive existed, and its directory structure. I wonder if that "memory" is what causes this problem.

 

[Darkbreeze]

Sounds to me like the drive enclosure has hardware issues that are separate from the drive itself or the hub has issues. Have you tried the drive ON the hub, with NO other devices attached to the hub?

If the unit is too old for RMA you might need to find another enclosure and transfer the internal drive to a new enclosure.

 

[ScoutDaDog]

Sounds to me like the drive enclosure has hardware issues that are separate from the drive itself or the hub has issues. Have you tried the drive ON the hub, with NO other devices attached to the hub?

If the unit is too old for RMA you might need to find another enclosure and transfer the internal drive to a new enclosure.

 

[Darkbreeze]

^^^^^^?????????

 

[ScoutDaDog]

I haven't tried it alone on the hub, but I did try with only it, a keyboard, and a mouse connected to the hub. I'll try it alone tonight or tomorrow. I didn't suspect the enclosure, since it works fine plugged directly into the USB-3 adapter card, and (slower) plugged into a USB-2 port on the laptop. I have an old USB-2 hub--I think I'll try that, too, when I get a chance.
BTW, I've seen this a few times before, with other drives on a hub. Each time, I checked the drive by connecting directly to the laptop--drive showed up, opened up. I shut down, then hooked the drive back into the hub. Restart; everything fine. Not his time, though. It's that kind of behavior that makes me think it's Windows confused about what's where, rather than a hardware problem. Maybe I'll see if Linux can see it.