On 02/06/2017 01:27 PM, Bob Goodwin wrote:
> On 02/06/17 16:08, Joe Zeff wrote:
>> dmesg | grep usb
>>
>> should help with that.
> +
>
> Yes that is working now but not earlier.
>
> I have managed to open up two of the four jacks so far by forcing one of
> the PNY flash droves in to them and wiggling it around which seems to
> loosen them up so the are easier to use. They should not be that stiff.
>
> I've probably had the board six moths or so and that's beyond the time
> when Newegg would take it back without much trouble, but even so I don't
> think I will bother. I'll just see if I can't get them all opened and free.
>
> Earlier I tested with an extension cable for convenience and dmesg,
> lsusb, did not detect it, dunno why, I use that cable often but it added
> to the confusion.
>
>
> I guess I needed someone to say those connectors should work either way
> since I was afraid to force them in like that, I still think they are
> poor quality connectors but I will test them further.
Perhaps this will help: USB1.1 and USB2 type "A" connectors have four
pins on the connector--all located on the little "shelf" inside the
connector. USB3 has nine pins--four on the little shelf (for
compatibility with USB1.1 and USB2) and five on the top of the "open"
part of the connector (the USB3-specific pins).
The shelf of your USB2 cable must fit between the shelf and the other
five pins of your computer's connector. USB3 connectors typically have
a thinner shelf than USB2 connectors (with pins on both sides of the
shelf to make contact with all 9 pins). That's probably where the
"tightness" you've felt when using a USB2 cable or device comes from
(stuffing the thicker shelf of USB2 into that space).
Using a USB2 cable in a USB3 connector won't hurt things (those five
extra pins in USB3 will flex back and forth), but the tension those
other five pins have in the USB3 connector may "cock" the USB2 cable so
it doesn't make reliable contact with the USB3 "shelf". Here's a good
picture that may make it clearer and you can see where the USB2 "shelf"
has to fit:
http://pinoutguide.com/Slots/usb_3_0_connector_pinout.shtml
I use USB2 cables and such on my USB3 slots a lot. Yes, I've had the
occasional "gee, the USB3 doesn't see that device", but a reinsertion
or "wiggle" of the USB2 part of things generally fixes it.
YMMV
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- Rick Stevens, Systems Engineer, AllDigital ri...@alldigital.com -
- AIM/Skype: therps2 ICQ: 226437340 Yahoo: origrps2 -
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- Polygon: A dead parrot (With apologies to John Cleese) -
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