Not working 2 of 4 usb ports on imac

Why not working 2 of 4 usb ports on imac?

Clean your ports....they catch dust & hence need to be cleaned......use a smaLL BLOWER

Similar Messages

My usb port not work and hot usb port aria please help me

my usb port not work and hot usb port aria please help me

Hi
Please find the link givenbelow might help you to fix your issue.
USB Device Troubleshooting
Fix Windows 7 “USB Device Not Recognized” Error
Let us know how it goes!
"I work for HP."
****Click the (purple thumbs up icon in the lower right corner of a post) to say thanks****
****Please mark Accept As Solution if it solves your problem****
Regards
Manjunath

USB-Hub not working on LEFT USB port?

Hello,
I have installed Windows 7 Ultimate 64 Bit on my MacBook Pro 13" Retina (Early 2013) and it's running fine. Boot Camp version: 5.0.5033.
But I have one problem: I bought an external monitor (Dell U2414H) which has an built-in 4-Port USB 3.0 hub. So I connect the Dell monitor using a DisplayPort 1.2a cable and an USB 3.0 cable. But Windows only recognizes the monitor's built-in USB hub when I plug the USB cable into the right USB port (when I sit in front of the MacBook). Then it works without problems. But when I plug the USB cable into the left USB port of the MacBook Windows only says "USB device not recognized". But other devices like USB sticks and USB drives also work without problems on left and right USB port of the MacBook. Also when I boot in OS 10.9 Mavericks the monitor's USB hub is working on both USB ports of the MacBook. So I think it isn't a hardware failure. I also re-installed Windows, but I have still the same problem.
Do you have any idea, why only the monitor's built-in USB hub is not working in Windows on the left port of the MBP or even how I could fix it?
Is Boot Camp 5.0.5033 the most current version? I checked the box to download the latest Windows support software and also didn't find anything newer than 5.0.5033 to download, but sometimes I read about 5.1.1 - but where could I download it? AND: Doest it help?
Thanks in advance!

I think I've hit a variation on the problem you're enoucntering. I have a late-2013 13-inch Macbook Pro Retina. I've just installed Boot Camp and a copy of Windows 7 Pro. This is my first experience with Boot Camp and Windows on a Mac, so I'm in foreign teritory.
The install all went fine and Windows 7 booted up fine and so far, all hardware seems to be working as expected, with one exception. Things went sideways when I tried use it in "clamshell" mode - lid closed with external monitors and all my peripherals attached to a USB hub. I set up Boot Camp to boot into Windows and attempted to boot. It would give me the usual boot-up fanfair and a then a gray screen for a few seconds, and then it would reboot. It just rebooted over and over. I eventually discovered the issue was the USB hub - without the hub connected , it would boot just fine. Once it was booted into Windows, I could attach the the hub and everything would be recognized normally. Furthermore, I could put the system in sleep mode, wake it up and everything would be working fine. But it simply refuses to boot the USB hub attached. I've stumbled on a couple related threads - see https://discussions.apple.com/message/23802231#23802231. The suggestion is that only certain hubs to not work. I've got two different high quality powered hubs and both display the same behaviour. The other point is, that when booting into OS X with the same hub, it works perfectly. So it's a strange problem.
Note that after reading your post, I did try the hub in both right and left USB ports and that made no difference in my case. I do have one more hub to try (built into my Dell monitor). I'll report back if that happens to work.

USB ethernet does not work in left USB port

My USB ethernet adapter does not work in the left USB port on my MacBook Air, but it works in the right side. Other devices, like my mouse, work fine in both ports.
Could I have a faulty left-side port with too little power for the ethernet adapter, or is this normal for MacBook Air?

I have the same problem.
USB Ethernet doesn't work with the left USB port. It does work with the right USB port, and any other USB device works with the left USB port on my macbook air
Any solution to this problem?

Some items not working in any USB port

Hello, I have multiple USB ports on this Mac Pro and recently when I try to plug in camera cords they do not work. I have a regular kodak camera usb cord and it doesn' work in the front of the back. It does not recognize the item. Also when I pull the plug out it puts the computer to sleep. Help please.
a

Since a new one's only $50 USD, I'd give that a try. BTW, if the machine's less than a year old (three years if covered under an AppleCare Protection Plan), you should be able to get it replaced, free of charge.

Can't use my HP Deskjet F4580 Wireless Printer with the AirPort Extreme Base. The printer is NOT connected at the USB port of the AirPort Extreme, and is placed in another room. It worked just fine with my previous router (Linksys WRT54G). Help me!

Hey Guys!
I just got my AirPort Extreme Base, but I can't use my HP Deskjet F4580 wireless printer with it.
The printer is not connected to the AirPort Extreme's USB port. It is placed in another room, and I'd like to use it (the printer) wirelessly (not connected to the USB port os the AirPort Extreme), as I used to. There is no place for the printer close the AirPort Extreme. It worked just fine with my previous wireless router (Linksys WRT54G). I'm very disappointed with the AirPort Extreme Base Station because of that!...
Can you help me? Please?!
Thanks Folks!

This must be a tough one, no suggestions at all.

Iphone doesn't work in my USB ports but everything else does, and iPhone works everywhere else!

My iPhone 3gs stopped working in the USB ports. Camera wizard doesn't even show up. Phone doesn't charge through it either, but if I plug my phone ANYWHERE else (computers and wall outlets) it works fine. When I plug keyboards and mice into my computer, they get recognized right away. My phone was working on my computer just about a week and a half ago, but just completely stopped. Can someone help me figure this out? I've read hundreds of threads from all over but can't seem to find the right answer. I'm going out of my mind here!!!

Did you do a restart, then if still not responiding then you need to do a restore through itunes.

Token and smart card reader are not detected on Mavericks if not plugged on a USB port during system boot

Well, both token and smart card reader are not detected on OS X 10.9 if not plugged on a USB port during system boot. So, if I am already working within the system and need to use my certificates I have to plug the token or smart card reader on a USB port and restart Mavericks.
Token is a GD Starsign and Smart Card Reader is a SCR3310 v2.
Thoughts?

SCS is a very good app, since I've read that Apple has discontinued support for PC/SC interfaces after the release of Mountain Lion.
(My previous installation was a Mavericks upgrade from Lion)
However, I don't know what and how to debug using Smart Card Services. Do you know any commands to use?
Apparently, the SC reader reports no issues: the LED is blinking blue when no smart card is present and becomes fixed blue when a smart card is inserted – according to the manuals, this shows that there is correct communication between the OS and the CCID reader.
I don't know what to do; I'm beginning to hypothesize it's a digital signer issue. In fact, my smart card only supports one application called File Protector (by Actalis) to officially sign digital documents. This application seems to have major difficulties in identifying the miniLector EVO.
The generic and ambiguous internal error comes when I try to manually identify the peripheral.
Athena CNS is one of the Italian smart cards and is automatically recognized and configured (so it's correct – no doubts about this), while "ACS ACR 38U-CCID 00 00" seems to be the real name of the miniLector.
(I'm assuming this because System Information also returns that the real manufacturer is ACS... bit4id is a re-brander)
However, when I click on it and then tap OK, it returns internal error.
As first attempt, I would try to completely erase&clean File Protector files to try a reinstall. Then, if this still doesn't work, I'd debug using the terminal.
So:
- Do you know any applications to 100% clean files created by an installer?
- Do you have in mind any solutions that I might have forgotten?
Thanks in advance from an OS X fan!

Ichat is not working. tried using port 443 and still does not work

ichat not working. tried using port 443 and i stay on for about 45 seconds then it disconnects. Can you help?

HI,
Can you tell me the make and model of your routing device.
The 10 Second error message is caused by a break in the connection.
This could be the Wifi being dropped (if you are using WiFi) due to interference from other nearby routers.
It can be dues to setting or features of the router and if the experience has changed that could be due to a speed increase in your internet service.
If you are using Ethernet and having this issue it is much more likely to be a setting/feature issue.
Examples.
Netgears. These have a separate WAN set up page that lists either DoS or SPI as one of the things that can be Enabled or Disabled.
Linksys. If your model has a Security tab and this has Firewall then DoS and SPI are port of this.
Netopia devices Tend to have a 4 level Firewall which DoS and SPI are part of the two highest settings.
DoS = Denial Of Service and is a Threshold based "Protection" Feature.
it judges whether too much data is being sent to you (it was designed originally to stop people overloading Web Servers (many people, many refreshes).
iChat can outstrip the setting with most Internet Connections in most part of the world. (In fact iChat can send more data than most Video Streaming sites)
One thing you can do that may get around this is to reduce the Bandwidth used in iChat (iChat Menu > Preferences > Video Section > Bandwidth Limit drop down)
Try 500kbps
10:07 PM Wednesday; November 23, 2011
Please, if posting Logs, do not post any Log info after the line "Binary Images for iChat"
 iMac 2.5Ghz 5i 2011 (Lion 10.7.2)
 G4/1GhzDual MDD (Leopard 10.5.8)
 MacBookPro 2Gb (Snow Leopard 10.6.8)
 Mac OS X (10.6.8),
"Limit the Logs to the Bits above Binary Images."  No, Seriously

Device works on some usb ports

My iPad stopped working on the USB port on the front on my PC. It keeps connecting and disconnecting.
It works fine when connected to a USB port in the back of the PC.
In windows, each USB port has its own driver. How do I remove the driver associated with the front port so that the iPad is recognized correctly by Windows?
Thanks.
Aloke

Hello, Aloke.
Thank you for visiting Apple Support Communities.
If your device is not recognized by iTunes, I would recommend the steps in the article below. Start with the section labeled Verify that the Apple Mobile Device USB Driver is installed > For Windows Vista, Windows 7, and Windows 8 > Update the Apple Mobile Device Driver. If the issue persists try all remaining steps.
iOS: Device not recognized in iTunes for Windows
http://support.apple.com/kb/TS1538
Cheers,
Jason H.

I bought the last apple wire keyboard , but it does not work with my usb ..

i bought the last apple wire keyboard , but it does not work with my usb hub why ?
the only way it works its when connecting it thrue my powerbook usb ...
the problem is i HAVE TO USE IT THRUE AN USB HUB ... do you think its because my hub is cheap ? 10 $ .... i 've been told that it comes from the fact that i need an auto-alimented usb hub ...?.
suggestions gentlemen ?

I have eyes everywhere. Two of them can see the word "Paris", right below your name, at left.

FRM-10142- The HTTP listener is not working in mypa at port 9001 in form11g

I new in forms 11g and I upgrading the forms 6i to 11g and I installed the forms11g successfully when I run the form after compiling it it give me the error.
*"FRM-10142- The HTTP listener is not working in mypc at port 9001. Please start the Listener or check your runtime setting"*
In form runtime preference I modified the web browser location to C:\Program Files\Internet Explorer\IEXPLORE.EXE.
Your Suggestions will be appreciated
Thanks in advance.

Hello,
The WLS managed server WLS_FORMS must be started .
You can use a BAT script containing the following command lines to start it :
title WLS_FORMS
set DOMAIN_HOME=D:\oracle\fmw11g\user_projects\domains\ClassicDomain
cd %DOMAIN_HOME%\bin
set SERVER_NAME=WLS_FORMS
call setDomainEnv.cmd
cd %DOMAIN_HOME%\bin
set WLS_USER=weblogic
set WLS_PW=password
call startManagedWebLogic.cmd WLS_FORMS http://127.0.0.1:7001
Regards

USB speaker does not work hi-speed USB 2.0 4-port ultra-mini hub

imac desk top port to hub - no sound

Does any USB thing show up?
Of not...
USB reset...
If your Firewire or USB isn't recognizing any device. A solution which has worked for some whose hard drive became invisible in 10.4 was simply to follow these four steps to reset the Firewire/USB bus:
1. Shut the machine down.
2. UNPLUG the power lead to the computer and any firewire/USB drive or devices.
3. leave it for 10 minutes.
4. Connect back up and reboot.
http://www.macmaps.com/firewirebug2.html

Is it possible to disable USB ports on iMac?

I've got a pair of 27" iMacs which will be utilized as Flash Pro workstations by employees and subcontracted illustrators and animators. In the interests of security, specifically -- protecting my intellectual property (animated content), I'm interested in setting up these iMacs such that nobody can copy any files they're working on to an external hard drive, or upload the file as an attachment to a webmail account or to an external server.
It is my understanding that I can set up a standard account and via network preferences, disable the wireless, ethernet, and firewire functions, which could then only be reactivated by an admin account password. But it would appear there is no way to disable the USB ports. Is such a thing possible? Is there a way to disable the USB ports on an iMac or any Mac?
In the event there is no way to disable the USB ports, is there a way to prevent someone from copying files on this iMac to external hard drives or uploading files to webmail programs or servers offsite?
How do employers prevent employees and subcontractors from copying or sending intellectual property offsite?

Per Eric Ross's link above, it would appear that one can use Workgroup Manager from the Server Admin Tools, to manage user accounts even on a Standalone Computer -- not running on a network or utilizing the OSX Server Software -- as seen in the following statement from Eric's link:
MacInTouch Reader
"... As an additition to Espen Koht's contribution, it should be mentioned that the 'Workgroup Manager' is part of the 'Server Admin Tools', which are distributed free of charge by Apple. Media access whether USB or Firewire for all users can be configured 'standalone' on each Mac computer by the user "Administrator"- it works!"
So I installed the Server Admin tools. According to the Workgroup Manager Help document, there appear to be two steps required to make the tools operational. First -- Setting Up an Administrator Computer and second -- Create a Directory Administrator Account. The Workgroup Manager Help document does not clearly explain how to configure a standalone computer for Workgroup Manager.
When I open the Workgroup Manager or Server Admin apps, I am presented with a window containing three fields that must be filled in. One is Address. The second is User Name. The third is Password. How do I determine the address? Do they mean IP address? What do I enter in the address field?
Regarding the Name and Password fields, do I enter the name and password of my admin account for this computer?... or use a completely different name and password?
Again the objective is to enable more comprehensive management and restrictions of Standard User accounts utilizing Workgroup Manager on a standalone computer.

Why is my iPhone not recognized on my USB port?

When I try to connect my iPhone 3G to my computer absolutley NOTHING happens. No error message no beeping from windows that it detects a connection, and I definitely cannot see it in my iTunes. I have tried restarting the phone, resetting the phone, restarting the computer, restarting the computer with my phone connected, reinstalling iTunes/Quicktime, plugging the cord into different ports on my computer (not my keyboard) and still nothing. I have an external drive with a USB port connection that is recognized when I plug it in the same USB ports. One would think it was the USB cord but the strange thing is I can use the same USB cord plugged into my phone and the adapter in the wall and it charges. I just can't update the software or add songs to my iPhone.
Anybody know what's going on?

Ok so I tried creating a new user account with administrative priviledges on the same computer and still nothing. I called apple tech support and spent about an hour on the phone with them and they are baffled as to why this is happening too. Their only suggestion was to replace the phone. So unless someone else has had this same problem and knows hows to fix it, or just knows of something that apple doesn't, I'm screwed!
Just out of curiosity, I tried connecting my phone to another computer to get the 2.2 update and it worked. So I updated my phone's software and tried plugging it in again and still nothing. Also, I tried connecting someone elses iPhone 3G to my computer with the same USB cord and my computer recognized their phone. So it must just be my phone and my computer don't like each other for some reason!
Here's the full scenario before the connection issue (just in case someone knows something I don't):
I was having problems updating my iTunes to version 8.0.2. It wouldn't fully install quicktime and without quicktime you can't run iTunes, in fact, iTunes won't even open. I got an error message that said I needed to repair or reinstall quicktime. So I completely deleted iTunes and quicktime software from my computer and reinstalled the version that is downloadable from apple's website (which is NOT 8.0.2). I got it loaded and alas iTunes finally opened. So I connected my phone and started updating to the 2.2 version of iPhone software. Then a window popped up saying I needed iTunes version 8.0.2. So I started that download as well. Then I walked away to let it download the updates needed for my phone and iTunes. I came back 20 min later and my computer had restarted itself (I'm assuming after the iTunes update it did that) and was at the login screen. So I logged in and my iPhone would then not connect to my computer after that. I unplugged and plugged it back in and I got a beeping noise but not the normal beeping noise a computer makes when you connect the USB cable. It beeped three times in the same lower tone instead of the 2 beep 2 tone you normally get. I realize in hind site that was probably not a good idea but I asked the apple tech I talked to and he said that shouldn't have been a problem even if the 2.2 iPhone update hadn't fully installed and had been interrupted. So there's my full story! Thanks for helping me out!!

Not working 2 of 4 usb ports on imac

Similar Messages

Maybe you are looking for