Gigabyte GA-Z68XP-UD3P - 20pin USB 3.0 Issue

Hi all,

Here's an interesting one that I can't seem to get to the bottom of! I have just installed an IcyBox IB-867 5.25" card reader/USB hub into my PC. I have hooked up all of the connectors required (1 x 20-pin internal USB 3.0 interface, 2 x USB internal connections, 1 x SATA and 1 x 4-pin power). All of the USB connectors work fine, so I know that part is connected properly and there is power.

The problem is with the actual card-reader slots. The power light doesn't come on, and no cards are recognised when I insert them. However, it DOES work if I pop the PC open whilst it's running, unplug the 20-pin USB 3.0 cable from the motherboard, and plug it back in again (whilst the PC is still running). At this point windows detects a new device, the card slot power-indicator turns on, and everything works fine. As soon as I turn the PC off and back on again, the card reader is no longer detected. Basically, if I want to use the card reader, I have to unplug and re-insert the internal USB 3.0 connector whilst the PC is running every time.

I am fairly sure that this must be either a BIOS or an Operating System issue, but I can't figure out what ... and why the reader isn't being recognised immediately on boot. Anyone got any ideas? Here are my PC specs:

Gigabyte GA-Z68XP-UD3P - Firmware Version F7
Intel i7-2600K @ 4.7ghz
ATI Radeon R9 290
16GB Crucial DDR3 RAM @ 1600mhz
Windows 7 64-bit (SP1 + all updates)
128BG SSD for OS
2 x 2tb 7400 HDD's

Thanks very much for any help!
6 answers Last reply
More about gigabyte z68xp ud3p 20pin usb issue
  1. try enabling or disabling legacy device support. alos make sure that usb isnt disabled at boot time in bios.
  2. Just a thought, I know that some Bios's (Asus in particular) have a setting where it will only initialize the keyboard and mouse. Not sure if this will solve your problem, but its worth a shot.
  3. I've messed about with all of these settings now, and still it won't detect it on boot. It's frustrating as I know it's not a problem with the card reader, or the USB 3.0 port as they both work perfectly when I pull the internal cable and reconnect it. Somewhere there is a setting hiding from me!!
  4. Hi there
    I see you had this issue a while back.
    I have exactly the same problem - I'm running Win 7 64bit with an ASUS Sabertooth mobo.
    Did you ever resolve this problem? If so I'd really appreciate any tips you might have as its driving me nuts and I can't find anything elsewhere on the web.
    regards
    Alan
  5. Alan248 said:
    Hi there
    I see you had this issue a while back.
    I have exactly the same problem - I'm running Win 7 64bit with an ASUS Sabertooth mobo.
    Did you ever resolve this problem? If so I'd really appreciate any tips you might have as its driving me nuts and I can't find anything elsewhere on the web.
    regards
    Alan


    Hey there,

    A good question! I did eventually get it sorted, but I can't remember exactly how! And even then, it was still a bit hit-and-miss. I would have to put the SD card in and out a few times before it finally decided to recognise it.

    From what I remember, it was a BIOS setting that finally got it to almost work. I'm now using an Asus board, and it works fine :D
  6. I know this is an old thread but I had an identical issue and as this forum came high in the search list I thought I'd post my fix here, since it hadn't been fully answered here or elsewhere as far as I could find. I have a Lian-Li USB 3 / SD card reader combi front panel unit, with an Asus X99 Deluxe mother board. I had exactly the same problem with the SD card reader only working if the internal connector was removed and re-seated with power on, although there was no problem with the USB 3 socket. After reading around and doing a few of my own tests I came to the conclusion it wasn't an OS issue so I looked at BIOS settings. The thing that fixed it was changing EHCI legacy support from 'Enabled' (the default setting) to 'Auto'. In my BIOS this setting is under Advanced > USB Configuration. The only side effect this change seems to have had is that the computer takes about 10 seconds longer to boot if I start it with a card already in the reader, but not if there is no card present. I don't normally leave a card in it anyway so it's not an issue. I think EHCI has something to do with USB 2 support, but from the info given on the BIOS screen I don't think changing from Enabled to Auto should make any difference if you're using the USB 2 sockets on the mobo (I don't though). I hope this will help others with this baffling problem!
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