Date: Wed, 28 Mar 2007 15:43:13 +0100
To: Joseph Lee <[EMAIL PROTECTED]>
From: [EMAIL PROTECTED]
Subject: re: [Braillenote] mPower USB
Hi Joseph
The 120GB XPress pocket USB drive from
www.smalldrives.com
comes with a cable that has 2 standard USB plugs on the one end
connected specifically to connect to 2 USB ports simultaneously in
case one does not provide enough power.
The manufacturer claims this device uses less power than the Western
Digital drives.
mPower simply does not provide enough power to spin the drive.
There is always the option to use an external power source but that
rather defeats portability.
Deon
At 18:26 27/03/2007, you wrote:
Hi there,
It is supposed to be 500 milliamps when combined - this is rather
by design. The maximum power that a USB port can supply is 500
milliamps. This, of course, requires that the device requests to
use more power. By default, when devices are connected, it
originally uses 100 milliamps. Then the device in question asks
Windows CE if it can switch to high power mode. Depending on
device type, CE will either accept it or deny it. If it acceps it,
the USB port will then use maximum of 500 milliamps. If not, the
device will still use 100 mikliamps (see my USB tutorial for further details).
Cheers,
Joseph
----- Original Message -----
From: [EMAIL PROTECTED]
To: [email protected]
Date sent: Wed, 28 Mar 2007 10:52:52 +0100
Subject: [Braillenote] mPower USB
Hi all, does anyone know what the power output is from each of
the 2
USB ports on the mPower?
Thanks
Deon
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