Date: Fri, 19 Mar 2004 09:51:10 -0800 (PST) From: Jim Drouillard <[EMAIL PROTECTED]> Subject: Re: [LIB] USB powered external HD
I don't think there's any way to get it to work without an extra power cable. All Cardbus USB 2.0 cards (there don't seem to be any 16-bit ones) have a jack for external power because the card slots only provide 500mA. That might be barely enough to run a 2.5" HDD but not enough to spin it up; most drives need almost 1A to start up. I have two cards, one BUSLink and one no-name from ebay, and two external USB 2.0 2.5" drive enclosures from ebay. The drives work fine without extra power on the built-in USB 1.1 ports on several laptops and desktops I've tried. Haven't tried my Lib 110 extended port replicator yet but I'd expect it to work. My no-name card came with a PS2 power cable; it didn't provide enough power on my Thinkpad 600E but it did on my Inspiron 8200. -------------------- 8 -------------------- Date: Fri, 19 Mar 2004 08:46:19 +0100 (CET) From: "Wouter Smith" <[EMAIL PROTECTED]> Subject: USB powered external HD Hello all, (I'm re-re-sending this again today as my previous posts from 3 and 1 days ago did somehow not appear on the list) I am looking for an external 2.5" USB harddisk. I want it to be fully bus-powered, do not want to use an ac-adapter or PS2-powercable. Obviously I'd like this thing to be able to work on my Libretto 110 as well. I'm using a USB2.0-pc-card. I've read that a lot of people have problems powering them through the usb-port, especially on laptops and pc-cards. When I look at the power properties of my 'usb root hub' in the device manager I see it is capable of supplying 500mah per port. As this is according to the usb-specs I hope it is able to power an external hd. I have tried my webcam, which claims to draw 500mah, and it works perfectly. But I'm not going to simply trust this. Does anybody have any experience with powering an external harddisk through USB pc-card on a Libretto? I don't want to end up buying one that doesn't work without extra power. Thanks, Wouter __________________________________ Do you Yahoo!? Yahoo! Mail - More reliable, more storage, less spam http://mail.yahoo.com ************************************************************** http://libretto.basiclink.com - Libretto mailing list http://www.silverace.com/libretto/ - Archives -------TO UNSUBSCRIBE------- Reply to any of the list messages. The reply mail should be addressed to: [EMAIL PROTECTED] - Then replace any text on the message's subject line: cmd:unsubscribe --------TO UNSUBSCRIBE DIGEST------ Do above but with this on subject line: cmd:unsubscribe digest **************************************************************
