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Usb problems please advise acer travelmate 4050 usb not reading

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Re: usb problems

Due to current (amperage) limits of batteries, most laptops have VERY small current caps on USB ports. Some desktops can have 1-2 amps per USB port, but laptops are often limited to 300 to 500 milliamps. This is sufficient for most memory sticks/pen drives, but many USB devices need much more power than that. For example, external USB-HDD cases for 2.5 inch hard drives will need 100-200 mA ABOVE the rating of the HDD, which is usually 500-750 mA. Few laptops can provide that much current, or will initially provide enough to spin up, but get errors or fail to mount due to lack of power. If your USB device has a secondary power jack, use it with a 5 volt AC power supply with the correct jack polarity and current rating. You can also try a "double harness" USB cable, which plugs into the laptop with TWO USB jacks, and into the USB HDD case with one (the third) jack. This allows TWO USB ports to "double" the available current for the USB device. Best to get the specs on your laptop, see what your USB current limits are, before doing this. If each port is limited to 300 mA and your HDD is 500 mA, you will be OK, but if the HDD is 750 mA, the total of 600 mA is not going to spin up the drive.

Posted on Feb 11, 2008

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Free download acer travelmate 4050 serios cl51 drivers


The only drivers available for this laptop are for Windows XP.

You can download these drivers directlyu from Acer:

From this page, choose "Notebook" then choose "TravelMate" then "TravelMate 4050"

You will see that Windows XP is the only operating system selected, and Windows Vista and Windows 7 are not selectable.

The two choices for Windows XP are XP Home Edition( 32 bit) and XP Professional Edition( 32 bit)

The drivers listed here are for:
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ENE Cardbus
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Acer travelmate 4050 bios setup password, reset password is required

hello, and I have a problem with Acer TravelMate 4050 and the problem lies in the total extinction of the system, namely when you turn on Windows light up when you enter and suddenly black screen and do not even think about blocking it immediately, but he remains on but do not think .... that is the problem?waiting for a response or contact id doi_ochii multtumesc advance ....

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I'm using acer travelmate 4050. The problem is all 3 usb port did not detect anything attached to it.

hello ... can you add to doi_ochii yes? have a problem with an Acer TravelMate 4050 block of everything I and my lcd is black cateoodata ... waiting to talk more beautiful there ... thanks

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What has changed most recently? did they work before? May be disabled in bios, need more info.

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