Apple :: Can't Use The Second USB Port On My MBP When I Have A USB Hub Connected
Feb 25, 2009
I have my mouse hooked up to a USB port on my MBP, the other USB port is connected to a USB hub with a printer and a keyboard. Whenever I put my MBP in sleep, whenever I come out of sleep my mouse needs to be reconnected, but my keyboard and printer work fine. I never experienced this with my mouse before I got a Targus USB hub.
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Jan 21, 2015
Just started using brand new Latitude E7240 and connected to E-port docking station. When booting an error pops up as below: The battery currently attached to the system will not supply enough power to dock for it to function. Please attach AC power to the dock for it to function normally
F1 - continue
F2- change setup options
The Laptop and the dock stations are brand new. This is only happening with the 7240's.
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Dec 8, 2009
I have an SXPS 1340 running Windows 7 Ultimate. I have tried to connect a Western Digital My Book Home external HD through the esata port but i can't get the computer to recognise it. Has anyone else successfully connected this model HD to the 1340 through esata? To those of you who have successfully connected a different external HD through the esata port what brand and model of external HD are you using?
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Jan 22, 2015
I bought this computer which is running 7win64 to update my T60 which I use with my home TV, a samsung digital running at 1360x768 resolution. The computer's native resolution is 1920x1080. I bought an hdmi adapter for the displayport from lenovo when I ordered the computer. Initially, the display works and at first it ran long enough to get everything set for a nice crisp display that fits the screen perfectly. The sound is there too, and is passed on to my receiver by the TV. Very nice. But then it begins to blink off until it doesn't work at all (the sound is cut off too). Lately it won't stay on long enough to review settings.
All updates are in place, both from microsoft and from lenovo. This has Intel 4600 graphics built in, and intel has graphics drivers available, but won't install them because of the lenovo supplied drivers.
I can't get any support from lenovo support because another device is involved.
I read online of some early users who had this problem with a docking station and i guess the problem was resolved with an updated driver.
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Aug 15, 2012
I'm experiencing very strange problem with my Dell Vostro 3750. This machine is equipped with USB 2.0 capable USB ports and USB 3.0 capable ports. During the power-up any USB devices (or even multiple devices via hub) can be connected to the USB 2.0 capable port. However if even a single device is connected to one of the USB 3.0 capable ports, the system doesn't start.
I've reported the problem on the Linux kernel related lists: 59561
But the only answer was, that I should report it to Dell suggesting fixing of BIOS. Maybe this is a BIOS related problem, but Windows 7 starts on the same hardware configuration without problems.
As I'm mainly using Linux for my work, two USB ports are practically useless for me, I have to connect all my USB stuff via hubs to USB 2.0 ports.
My current BIOS (after last BIOS upgrade) is:
DMI: Dell Inc. Dell System Vostro 3750/0VP036, BIOS A12 02/22/2012
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Jan 8, 2013
Does w530 can operate while connected to a power port in a plane? I understand that most of the in-flight AC power ports are limited to 75W, but I haven't tested my machine under such conditions.
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Nov 7, 2013
When I connect my external monitor (ASUS PA248) to my W520, the audio disappears. When I disconnect it, the audio returns. This seems a bizarre link between audio and video, but there it is. Note that the PA248 does NOT have built-in speakers.
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Apr 24, 2009
On my macbook I noted that when I just switch the airport ON, in order to search for some WIFI networks, the macbook completely freezes if I have the 3G usb already connected to internet.
This happens also if the 3G pen is only searching the 3G network (after being plugged) and then I switch the airport ON.
Why does this happen?
May all people having a 3G subscription try this?
I do not understand why this occurs. I will try on Monday in the Apple store but I would like to have your help also. For your information, I have a huawey e169 3G drive.
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Feb 18, 2010
i want to shutdown the screen of the macbook pro when connected to an LCD TV without closing the lid.
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Aug 16, 2009
I don't charge my iphone thru the usb port thinking it'll weaken the battery of the notebook even when its plugged in, am I right about this ?
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Nov 24, 2009
some one to get their Mic working using line in (3.5mm jack). I decided to test mine, well, it doesn't work either, and some one else there said theirs didn't work too. Then he posts this link. [url]
Wow, so the Line-in port is not powered, that means any Mic that isn't powered will not work.
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Dec 15, 2009
Especially in the circumstances of video editing and digitizing. What is the process that people would do now?
Would they put the camera in the firewire nd then capture via USB of the external hard drive and then put the firewire for the hard drive after capturing and on to editing?
Why is it that it seems only the Mac Pro is the only Mac that now has more than one fire wire port?
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Jan 2, 2010
Does anyone here own these cables [url], or a different brand? If so, would you care to share what you think about them and if it's better than using the MDP to DVI converter?
I'm thinking about pulling the trigger on these but it seems that this is a new product and there aren't that many reviews yet so I'm still a bit hesitant.
What are your thoughts?
Or if anyone owns the adapter [url] .
Also, I'm seeing that you can't get audio through the adapter for the MBP. If that is the case, would I be able to get audio if I went through the MDP -> DVI ->HDMI route?
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May 10, 2010
I have a new MacBook Pro 13" 2.66GHz.
I have seen adaptors that allow me to output via HDMI.
Obviously HDMI carries audio as well as video - but will my MacBook output both audio and video through the mini display port?
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Apr 23, 2010
I noticed that the macbook unibody does not have firewire port.
So if I need to use firewire device, then I have to get the USB to firewire adapter for it.
I just want to get this right, if I use the adapter then that means I will get tranfer rate of general USB 2.0 speed which is 480Mb/s. Is that right?
If it is, then I'm gonna miss the higher transfer rate of firewire on old macbooks
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May 1, 2009
At university, there are projectors which are used when doing a demo or presenting our software. I wanted to know if the mini display port to vga converter works flawlessly with projectors.
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Aug 19, 2009
Would this card reader fit indside the Macbook Air USB port:
[url]
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Feb 20, 2009
I'm trying to hook my aluminum macbook up with my TV. I've gotten all the wires but it isn't working, is there something I have to do on my Macbook? Something to press?
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Jul 16, 2009
I just got a new macbook pro last monday and one of the usb ports doesnt work... I bought it at an apple store about 45 minutes from where I live... and I have set up an appointment with the genius bar (this is the only option they gave me). Do you think they will just replace it and give me another one (new)? I am a CS student taking summer classes and it is required for me to have a laptop. The laptop is only 10 days old... and I still have all of the original cd's, case, etc...
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Apr 25, 2010
I bought a miniDisplay Port to HDMI and 3 HDMI Cables and a HDMI splitter from seller mambate on eBay. Surprisingly it was all really good quality, the audio works well, I wish I had a surround sound system to test it on but I use optical audio for HT. So my Hanns G 28 Monitor is really the only thing I could test it on, and it works.
The Splitter comes wit a remote too which I thought was cool.
This is my MBP13 and he Hanns G
Funny side note, the MBP quicktime plays better 1080p vids on the HannsG dont know why. either way plex is the best program for videos.
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May 10, 2010
I have a 13.3" MBP and a HP LP3065 monitor. At times, I would like to use the monitor for more real estate. I know there is the Apple mini display port to dual-link dvi adapter. Are there any other options that I will be able to use my monitor at 2560x1600 resolution with the MBP?
The reviews for the apple adapter suck and basically all of them have flickering issues. I would hate to buy it, return it, and waste my time on something I know that has a great chance of failure.
I also have Logitech Z-5500 speakers that I would like to use with my Macbook. Would a toslink to mini-toslink cable work?
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Jan 26, 2008
what COM port my serial port is on my XPS M1710. Is there a program that I can find all this out in Windows that I just never knew about?
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Apr 5, 2010
Thinking about getting one to go with my m4500 which is on order. Reviews seem ok though some complain it's bulky and other complained the release mechanism wasn't great. Worst was that someone said their comp wouldn't boot when docked.
Can anyone share experience and/or high res pics of what one looks like?
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Mar 5, 2009
Here's my story and, let's say, my analysis:
I bought a generic 2 HD sata2 RAID1 enclosure based on the chipset Silicon Image SteelVine 5744. It can be used in USB or eSATA2. This embedded chipset (named SiL5744) is known (understand "claimed") to auto-handle Sata I/II and host sata2 controllers that not support the port multiplier feature. The HD are two Samsung F1 1To. There's no jumper to rollback to SATA 1.5Go on them, you can only do it by flashing the HD's bios, however we don't need to do it as I wrote just before, the SiL5744 supports SATA 3Go natively.
The enclosure works pretty well with USB, but *not* in eSATA : the E6500 freezes/hangs just after the POST step (a potential driver issue with the installed vista 64bits is not the reason then). As soon has I disconnect the eSATA cable, the system recovers and continues as normal.
What I've tried/done so far :
Both E6500's BIOS SATA mode AHCI and IRRT mode were tested,
Intel Matrix driver and software was updated to the latest 8.7.0.1007 version (AHCI and IRRT),
The SiL5744 chip was upgraded to its latest firmware as well (in case of...)
In order to verify the esata cable, the HDs and the enclosure itself, I succeed to :
- Use the enclosure's RAID1 feature when using the USB connection, I could partition,format, and read/write on the logical volume
- directly connect *one* HD (Samsung F1 1To) to the E6500's esata port -(I have a sata2esata cable), Vista installed it and I was able to use it as normal, even the hotswap feature seemed to work fine (I unkindly removed it). I could so test both HD individually this way... On the enclosure hardware side, everything looks fine then.
An IMPORTANT thing : The E6500's ICH8/9-M sata host controller seems to support the Port Multiplier feature *ONLY* on sata port 0 -as a bubble message from the Intel Matrix soft sometimes shows up-, but this is exactly where the internal HD is plugged on the motherboard I found nowhere you can change the internal sata port ID (switch,bios,ect...). I think this is the key of the problem that seems to be a dumb port conflict, because the esata port is in fact the port sata 4 (the DVDRW drive is sata 1, dock's esata is 5 for instance). If somebody knows how to swap the sata port ID, I think I won't be toasted !
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Aug 19, 2007
My Wireless network is showing as "Not Connected" but it's really connected, I'm on the laptop now posting this message.
It's a "free" wireless domain at the hospital I am at right now.
When I am at home, I normally connect VIA wired connection since I use my laptop for gaming a lot, helps keep the connection more stable.
I went into my preferred networks and deleted them all. Still nothing has changed.
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Nov 24, 2009
I have a question regarding the battery life of my E6400..
Does connecting the machine to the power supply when the battery
is fully charged reduce the battery life?..
BTW: what is the best way to work with the machine when it is 99% of the times connected to the power supply..
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May 12, 2009
the reviews were right, the laptop's speakers are very poor so i thought maybe i could connect it to my 2.1 desktop speakers.
they're still very poor (and low). i tried adjust settings to Stereo Speakers but nothing works. I'm connecting through the head phone port btw.
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Jun 11, 2009
I own a Studio 1555 and i am having this peculiar problem with my onboard LAN connection. The LAN cable is connected to the NIC, yet it is displaying cable not connected. I need to reconnect the cable (remove it from the NIC and reconnect it) and it displays cable is connected and the connection ensues. Once i restart the machine, the same is displayed and i will have to reconnect the cable once again in order to get connected.
I do not want to reconnect the cable every now and then, when i reboot the laptop..
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May 3, 2009
My HP 6910p is doing extremely slow as long as the AC adapter is connected, but fine when only running on battery.
Problem remains when disconnecting the battery and only running with the AC connected.
Problem exists outside operating system (ie. also in BIOS).
When AC is connected the CPU load is constantly high, otherwise it isn't.
Booting XP with AC connected gives blue screen. Unable to see the error code before it reboots. Booting with battery only works fine.
Problem remains after updating BIOS+reset to default values.
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Dec 16, 2012
I bought a new laptop HP Pavilion g7.I got Ralink RT3290 802.11bgn Wi-Fi Adapter but my problem is that I can only connect to 802.11 n network and I can not use 802.11 g wifi.When I trying to connect 802.11 g wifi it says limited can not download any webpage but I should use it with this Ralink 802.11 bgn adapter yes? I have already updated the Wifi adapter but didn't work I turned off every firewall and antivirus software and I have already writing by manually IP address ,subnet mask etc...I got window 8 software. what has windows 7 I can connect without any trouble to 802.11 g wifi! I'd like to use 802.11 g because the signal strength is stronger than 802.11 n .I can receive the signal from 802.11 g wifi network somehow.
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