Need USB card with enough power for external hard drive
in [Hardware]
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From: Carl on 23 May 2010 11:58 I have an HT-Link Cardbus/PCMCIA USB 2.0 2-port card (NEC / 32-bit). My external hard drive w/USB adapter won't work with it, and it will work plugged directly into a USB port on a different laptop. (My USB ports got fried.) I got the card off E-Bay. My MP3 player works plugged into that card. The drivers for the card say "Known limitations: High Speed Isochronus, USB Composite Devices." (No other details provided.) I don't know if the hard drive adapter is "isochronous" or "composite." I've read there are problems with too little power being supplied to the drive. The cable to the drive has two USB plugs on one end, and it doesn't make any difference if I plug both of them into the Cardbus card. What card should I get? I see many different brands on E-Bay. I need one that supplies sufficient power for an external hard drive, and doesn't have any "known limitations" in the way.
From: Roger Mills on 23 May 2010 12:37 On 23/05/2010 16:58, Carl wrote: > I have an HT-Link Cardbus/PCMCIA USB 2.0 2-port card (NEC / 32-bit). > My external hard drive w/USB adapter won't work with it, and it will > work plugged directly into a USB port on a different laptop. (My USB > ports got fried.) I got the card off E-Bay. My MP3 player works > plugged into that card. The drivers for the card say "Known > limitations: High Speed Isochronus, USB Composite Devices." (No other > details provided.) I don't know if the hard drive adapter is > "isochronous" or "composite." I've read there are problems with too > little power being supplied to the drive. The cable to the drive has > two USB plugs on one end, and it doesn't make any difference if I plug > both of them into the Cardbus card. > > What card should I get? I see many different brands on E-Bay. I need > one that supplies sufficient power for an external hard drive, and > doesn't have any "known limitations" in the way. > The cardbus card probably *can't* supply enough power unless there's a way of getting power to it from another source. I have a 4 x USB2 port cardbus card made by Pluscom which has a little power socket on the front in addition to the USB ports. It comes with a lead which plugs into a normal USB port just for the purpose of supplying power to the card. Do you have any other source of power for USB devices, such as a USB-based mobile phone charger? If so, you could try plugging one of the drive's plugs into *that* - which may solve the problem. -- Cheers, Roger ____________ Please reply to Newsgroup. Whilst email address is valid, it is seldom checked.
From: Paul on 23 May 2010 13:27 Carl wrote: > I have an HT-Link Cardbus/PCMCIA USB 2.0 2-port card (NEC / 32-bit). > My external hard drive w/USB adapter won't work with it, and it will > work plugged directly into a USB port on a different laptop. (My USB > ports got fried.) I got the card off E-Bay. My MP3 player works > plugged into that card. The drivers for the card say "Known > limitations: High Speed Isochronus, USB Composite Devices." (No other > details provided.) I don't know if the hard drive adapter is > "isochronous" or "composite." I've read there are problems with too > little power being supplied to the drive. The cable to the drive has > two USB plugs on one end, and it doesn't make any difference if I plug > both of them into the Cardbus card. > > What card should I get? I see many different brands on E-Bay. I need > one that supplies sufficient power for an external hard drive, and > doesn't have any "known limitations" in the way. > If you used an external 3.5" USB drive enclosure, they come with their own power adapter. That is another way to solve the problem. http://images17.newegg.com/is/image/newegg/22-152-230-Z05?$S640W$ Paul
From: Carl on 23 May 2010 14:01 On May 23, 12:37 pm, Roger Mills <watt.ty...(a)gmail.com> wrote: > On 23/05/2010 16:58, Carl wrote: > > > > > I have an HT-Link Cardbus/PCMCIA USB 2.0 2-port card (NEC / 32-bit). > > My external hard drive w/USB adapter won't work with it, and it will > > work plugged directly into a USB port on a different laptop. (My USB > > ports got fried.) I got the card off E-Bay. My MP3 player works > > plugged into that card. The drivers for the card say "Known > > limitations: High Speed Isochronus, USB Composite Devices." (No other > > details provided.) I don't know if the hard drive adapter is > > "isochronous" or "composite." I've read there are problems with too > > little power being supplied to the drive. The cable to the drive has > > two USB plugs on one end, and it doesn't make any difference if I plug > > both of them into the Cardbus card. > > > What card should I get? I see many different brands on E-Bay. I need > > one that supplies sufficient power for an external hard drive, and > > doesn't have any "known limitations" in the way. > > The cardbus card probably *can't* supply enough power unless there's a > way of getting power to it from another source. I have a 4 x USB2 port > cardbus card made by Pluscom which has a little power socket on the > front in addition to the USB ports. It comes with a lead which plugs > into a normal USB port just for the purpose of supplying power to the card. > > Do you have any other source of power for USB devices, such as a > USB-based mobile phone charger? If so, you could try plugging one of the > drive's plugs into *that* - which may solve the problem. > -- > Cheers, > Roger > ____________ > Please reply to Newsgroup. Whilst email address is valid, it is seldom > checked. The card has a hole in between the two USB port for a plug, but the card didn't come with a cable. I checked E-bay. I could get a new card that comes with a cable for the same price as just a cable.
From: Carl on 23 May 2010 14:02
On May 23, 1:27 pm, Paul <nos...(a)needed.com> wrote: > Carl wrote: > > I have an HT-Link Cardbus/PCMCIA USB 2.0 2-port card (NEC / 32-bit). > > My external hard drive w/USB adapter won't work with it, and it will > > work plugged directly into a USB port on a different laptop. (My USB > > ports got fried.) I got the card off E-Bay. My MP3 player works > > plugged into that card. The drivers for the card say "Known > > limitations: High Speed Isochronus, USB Composite Devices." (No other > > details provided.) I don't know if the hard drive adapter is > > "isochronous" or "composite." I've read there are problems with too > > little power being supplied to the drive. The cable to the drive has > > two USB plugs on one end, and it doesn't make any difference if I plug > > both of them into the Cardbus card. > > > What card should I get? I see many different brands on E-Bay. I need > > one that supplies sufficient power for an external hard drive, and > > doesn't have any "known limitations" in the way. > > If you used an external 3.5" USB drive enclosure, they come > with their own power adapter. That is another way to solve the > problem. > > http://images17.newegg.com/is/image/newegg/22-152-230-Z05?$S640W$ > > Paul It's a 2.5" USB drive enclosure. It doesn't have a plug for a power adapter. |