Post by: RHPConsult on June 08, 2007, 07:00:10 PM
I'd like to learn some more on USB hub characteristics with which I've previously been unacquainted.Belkin touts its USB hub quite highly. I have one – self-powered – attached to my AEBS (11.n) but I find that not everything plugged-into it will function (normally), i.e. as though plugged into my iMacIntel.
What's that all about? Is the hub faulty? Does its mediation (whatever) via the AEBS render the connection nonviable for my SD card reader?
My ZIO reader will not function plugged into this (again, self-powered) hub.
Any ideas/opinions?
Post by: Xairbusdriver on June 08, 2007, 08:25:43 PM
Post by: krissel on June 08, 2007, 08:48:22 PM
Doubt you need firmware update but check this out:
http://docs.info.apple.com/article.html?artnum=107857
Post by: RHPConsult on June 08, 2007, 10:31:49 PM
QUOTE
AbsolutelyQUOTE
Doubt you need firmware update but . . .
Did a new resetting of the new AEBS the other day, and an updating of firmware to 7.1 as part of that process. Then, this afternoon I received the message that v. 7.1.1 was avaiklable. So now it's the latest and greatest, firmwarewise.USB Hub = 'tis a puzzlement
Post by: MamaMoose on June 09, 2007, 12:13:51 AM
Welcome to the world of flaky USB!! First, make sure a) your hub is either USB 2.0 (faster) or USB 1.1 and b) check each USB device to see if it is USB 2.0 or USB 1.1 type. Now comes the problem. First, if your Mac is newer it should have all USB 2.0 ports. If you connect a USB 1.1 device to a USB 2.0 port, the port will work but all other USB devices connected to that port will slow down to USB 1.1 speed.
One possibility is that you may be connecting 2.0 and 1.1 devices to either a USB 2.0 hub or port. This shouldn't be a problem but to be on the safe side, since my three USB buses are USB 2.O, I have two hubs: a) an USB 1.1 for keyboard, mouse, and any 1.1 flash drives and b) an USB 2.0 for all my 2.0 devices. Therefore, I sacrifice only one USB 2 bus to slower USB 1.1 devices.
for a device
Frankly, if you understand what I just wrote, I am awarding you a PhD in EE!! Even I, sans an EE degree, am confused.
On the other hand, as Tevye the dairy man would say, it could just be the USB (Universal Standard Bus)( protocol
may be a bad design and doesn't work with Apple's protocol.
Now that I succinctly and clearly explained this matter to you, you should raring to go smoothly down the path towards computer nirvana!!
MamaMoose
Post by: RHPConsult on June 09, 2007, 12:52:10 AM
I decided simply to
- bypass the AEBS
- plug my USB printer directly into the AEBS' USB port, despite the fact it's been working quite well through the Hub
- plug the Hub directly into the iMacIntel
The Hub is "handling" my SD cards now with ease.
I hope
Post by: Mayo on June 09, 2007, 02:56:01 AM
Post by: krissel on June 09, 2007, 03:12:16 AM
But then I found this which suggests otherwise.
QUOTE
. If you connect a USB hub to the base station, you can connect multiple hard disks to it, and access them from the wireless network.
http://docs.info.apple.com/article.html?pa.../en/ap2108.html
It may be that the card reader is just not built along the specs as needed to be recognized by the system through the Airport setup. I would gather that there is a big difference between a USB hard drive and a card reader.
Post by: RHPConsult on June 09, 2007, 01:11:54 PM
Mayo noted
QUOTE
The AEBS isn't designed to have a USB hub plugged into it; the AEBS USB port is only meant for printers.
However, I have been using as noted for about 3 months, exactly as Kris found in the Apple literature
QUOTE
If you connect a USB hub to the base station, you can connect multiple hard disks to it, and access them from the wireless network.
Now, however, doing what I reported 3 posts above this one has actually given me (and my arthritic hands) some advantages.
- The Hub is now plugged-in the back os the iMacIntel
- IO is now a much more convenient place to charge (and sync) my Palm, charge my TomTom, use the card reader, etc – those items that need temporary attachment but are, at the same time, difficult (read = painful) to plug-in/pull-out of the back of the ikMac if you have arthritic complications as do I.
Thanks to everyone who volunteered here: Kris, jim, Tom and Mayo
As I said, just posting this thread helped to clear my head (surprise, surprise) to see an alternative I'd previously overlooked. Good friends did the rest.
Post by: Mayo on June 09, 2007, 03:34:37 PM
Post by: Xairbusdriver on June 09, 2007, 04:27:43 PM
That current draw may also be the cause of your problems when your hub was connected to the AEBS. The contradictory info from Apple does not help.
I did not see a specific answer to my quest about what type of hub you are using, BTW. Does it have any kind of external power source? Or is it simply a small container of mystery?
Post by: RHPConsult on June 10, 2007, 02:30:32 AM
QUOTE
By "self-powered" I assume you mean it has its own 'brick' supplying power to it?
to which I responded w/uncharacteristic brevity QUOTE
Abolutely
It's a "Belkin, Hi-Speed USB 2.0, 4 port Hub" . . . wit-a-brik.It's working perfectly now that it's plugged-into the iMac's USB 2 port.
No prob-lem!
Post by: Xairbusdriver on June 10, 2007, 01:22:49 PM
Post by: RHPConsult on June 10, 2007, 04:09:42 PM
Post by: sandbox on August 20, 2007, 02:59:11 AM
thanks
Post by: jepinto on August 20, 2007, 07:18:37 AM
Post by: sandbox on August 21, 2007, 12:03:33 AM