From: Daave on
Jo-Anne wrote:
> "Daave" <daave(a)example.com> wrote in message
> news:eRrFjiAfKHA.3792(a)TK2MSFTNGP02.phx.gbl...
>> Jo-Anne wrote:
>>> <snip>
>>>>>>>> There are a lot of external burners that plug into the
>>>>>>>> electrical outlet. That to me is better than using the usb
>>>>>>>> port for power. Try this link.
>>>>>>>> http://www.newegg.com/Product/Product.aspx?Item=N82E16827151194
>>>>>
>>>>>
>>>>> Thank you again! I looked at this burner at Newegg, and I'm
>>>>> confused. If this is a burner that plugs into an electrical
>>>>> outlet, how do you know that? I couldn't see anything in the
>>>>> specs about a power supply... Jo-Anne
>>>>
>>>> Look at this picture of it.
>>>>
>>>> http://www.newegg.com/Product/ImageGallery.aspx?CurImage=27-151-194-Z06&SpinSet=27-151-194-RS&ISList=27-151-194-Z01%2c27-151-194-Z02%2c27-151-194-Z03%2c27-151-194-Z04%2c27-151-194-Z05%2c27-151-194-Z06&S7ImageFlag=1&Item=N82E16827151194&Depa=0&WaterMark=1&Description=SAMSUNG%20USB%202.0%20Black%20External%2022X%20DVD%20Burner%20Model%20SE-S224Q
>>>>
>>> Thank you, Bob! Now I see it. But shouldn't that be something they'd
>>> mention in the specs?
>>
>> Although I have seen external hard drive enclosures that don't need
>> AC juice (then again, I'm pretty sure they still all have that
>> option), I would imagine that there is no such thing as an external
>> DVD burner that wouldn't require an AC connection.
>>
> Hi, Daave,
> I've been told that many (most?) of the external DVD burners get
> their power from two USB ports rather than from an AC connection.
> Some people have said that theirs work OK with only one USB port.

I find that surprising!


From: Paul on
Daave wrote:
> Jo-Anne wrote:
>> "Daave" <daave(a)example.com> wrote in message
>> news:eRrFjiAfKHA.3792(a)TK2MSFTNGP02.phx.gbl...
>>> Jo-Anne wrote:
>>>> <snip>
>>>>>>>>> There are a lot of external burners that plug into the
>>>>>>>>> electrical outlet. That to me is better than using the usb
>>>>>>>>> port for power. Try this link.
>>>>>>>>> http://www.newegg.com/Product/Product.aspx?Item=N82E16827151194
>>>>>>
>>>>>> Thank you again! I looked at this burner at Newegg, and I'm
>>>>>> confused. If this is a burner that plugs into an electrical
>>>>>> outlet, how do you know that? I couldn't see anything in the
>>>>>> specs about a power supply... Jo-Anne
>>>>> Look at this picture of it.
>>>>>
>>>>> http://www.newegg.com/Product/ImageGallery.aspx?CurImage=27-151-194-Z06
>>>>>
>>>> Thank you, Bob! Now I see it. But shouldn't that be something they'd
>>>> mention in the specs?
>>> Although I have seen external hard drive enclosures that don't need
>>> AC juice (then again, I'm pretty sure they still all have that
>>> option), I would imagine that there is no such thing as an external
>>> DVD burner that wouldn't require an AC connection.
>>>
>> Hi, Daave,
>> I've been told that many (most?) of the external DVD burners get
>> their power from two USB ports rather than from an AC connection.
>> Some people have said that theirs work OK with only one USB port.
>
> I find that surprising!
>

I think the slim drives run on 5V. The claim here is that it is bus
powered.

http://www.samsung.com/sg/consumer/pc-peripherals-printer/optical-disc-drive/dvd-rw-drive/SE-S084B/RSBN/index.idx?pagetype=prd_detail

The picture on Newegg for that drive, shows it has a "Y" cable for
USB. And that allows 5V at up to 1A to flow. One USB connector is
just for the power pins, the second is a full connector with data
pins. Being miserly on power, means a longer spinup.

http://images17.newegg.com/is/image/newegg/27-151-186-S04?$S640W$

*******
The desktop versions run on 5V and 12V, and draw more current from each.

They're a different design. The desktop version definitely needs a
power brick. I've measured mine and it draws 12V @ 1A when running
with media in the tray. The label on my desktop drive says it draws 1.5A max.

And things like desktop Blu-ray drives draw even more current. Although
those numbers seem to be dropping on the latest ones. They're getting
closer to the other CD/DVD drives. I think I've seen one earlier than
this, that draws 2.5A max.

http://www.bettercomputers.com.au/sony-bwu100a-dl-blu-ray-dvd-burner~p-517.html

Power Consumption 5V @ 1.1A, 12V @ 2.2A max

HTH,
Paul