U Speed 7-Port H7928-U3 USB3 Hub Problems
October 19, 2013
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Update 2016-03-28: I truly believe the problem was my motherboard with a fast USB initialisation setting in the BIOS. By disabling the “quick” USB option (reverting to a more thorough boot process) hubs are more reliably detected by the motherboard. But I haven’t thoroughly tested this theory – I’ve just not had a problem with a more recent USB3 hub that I bought that exhibited a similar problem before I changed the BIOS.
Twelve months ago I bought a 7 port USB hub from Amazon UK. It was the U Speed 7-port H7928-U3 hub (now labelled Anker I suspect).
U Speed H7928-U3 USB Hub
It’s a great little hub – when it is functioning. But there are a couple of situations where it doesn’t.
Will Not Let Motherboard Boot When Plugged In
I have an Asus (ASUSTeK) P8H77-V LE motherboard (according to CPU-Z).
If the USB3 hub is powered on and connected to a USB3 port on my Asus motherboard it will boot but not recognise my USB2 keyboard. That prevents me from booting because I need to enter a password to boot.
The only solution is to unplug the USB3 cable from the USB3 hub before booting. As soon as the mainboard (motherboard) has finished its POST and begun running whatever code is in the boot sector of the chosen boot device you can re-attach the USB3 cable to the USB3 hub.
Windows 7 Doesn’t Recognise Any More Devices or Hard Drives Attached To The Hub
On occasion Windows 7 will not recognise a USB3 drive (or any devices) attached to the hub. Unplugging the device/drive and plugging it into a different port doesn’t help. Although the blue light goes on Windows 7 doesn’t appear to notice a new device has been attached.
Unplugging and re-plugging the USB3 hub itself from the mainboard (motherboard) doesn’t help.
The solution is to unplug the DC power from the USB hub, unplug the USB3 cable from the hub to the mainboard (motherboard), then count slowly to ten. Then re-attach the DC power to the hub, re-attach the USB3 cable to the hub from the mainboard (motherboard). Then re-attach your USB3 device (or drive). Windows 7 should recognise it now.