Re: Cables: USB 3 - Firewire800

2012-04-27 Thread Stuart Evans
As others have noted Merv.not worth it. I fail to see the value in it
even if it were technically possible. If it were a legacy device that you
just had to have, maybe...but an external Hard Drive? Nup. Just plug it into
your USB port on your iMac and it will work OK, just not as fast as
Firewire800. Alternatively, get an external Firewire 800 case and transfer
the drive (assuming it's not a chipped drive).

Stuart  


On 27/04/12 10:22 AM, hugh griffiths hgr...@hotmail.com wrote:

 
 The power issue is the one I would be the most cautious with, USB is 5 v or
 less, but firewire can be up to 40 V ( different ampages as well and I would
 be very worried as the pins for power would be different as well)
 
 Hugh
 
 Subject: Re: Cables: USB 3 - Firewire800
 From: wa...@macwizardry.com.au
 Date: Fri, 27 Apr 2012 09:03:27 +0800
 To: wamug@wamug.org.au
 
 Got in before I did Carlo :) So won't rehash what you've written,..lol :)
 But yes, I'd be a bit cautious. The other thing would be if you'd see any
 real world speed difference. The USB3 would only be running at USB2 speed
 as that is what the Mac would expect, so it's not going to convert to
 Firewire speeds, so I think you'd still be gaining USB2 speeds anyway. So no
 real improvement.
 I could be wrong here, but I also had the impression there were differing
 data versus power consumptions through both a USB and Firewire cable. (ie
 one pulls through or expects more power and data then the other). So wouldn't
 want to fry anything if there was. Again, I could be wrong there,...
 
 Found this info as well, which may help with it...
 /quote
 Firewire is isochronous, basically meaning that you can pump clocked data
 though it in real time. USB works more like TCPIP, with the data chopped up
 into packets and later reassembled. (Thus, at a minimum, you have latency,
 that is, the wait for the data to be put back together.) Second, the
 Firewire protocol allows more direct address to memory (including mass
 storage) with minimal intervention of the CPU.
 /end quote
 
 I can't lay my hands on the other info I thought I had and Siri can only do
 so much when driving,..lol ;)
 
 Kind regards
 Daniel
 
 Sent from my iPhone 4s
 
 ---
 Daniel Kerr
 MacWizardry
 
 Phone: 0414 795 960
 Email: daniel  AT macwizardry.com.au
 Web:   http://www.macwizardry.com.au
 
 
 **For everything Macintosh**
 
 On 27/04/2012, at 8:46 AM, cm wrote:
 
 Hi Merv and Peter,
 
 I would be wary of those connectors. Notice they are all on resale sites,
 none are manufacturer sales. They could be fakes.
 
 As I said earlier, I don't believe it is possible to convert USB to Firewire
 with just a simple pin-to-pin cable. USB used the PC as the bus master
 whereas Firewire is a true peer-to-peer connection and required handshaking
 signals back from the disk drive.
 
 Cheers,
 Carlo
 
 
 On 27/04/2012, at 7:10 , Peter Sealy wrote:
 
 I thought I had a vague memory (at my age all memories are vague) of seeing
 USB to Firewire converters somewhere. So I did a quick Google search and
 came up with these. I have not looked in depth at any of them and have not
 explored any further but the Google search will surely find more info.
 
 http://www.ebay.com/sch/sis.html?_kw=USB+A+MALE+TO+IEEE1394+4+PIN+Firewire
 +ADAPTER+CONVERTER
 
http://www.amazon.com/NEEWER®-Travel-Firewire-Cable-Adapters/dp/B00354MVP0

 http://www.ask.com/questions-about/Firewire-USB-Converter
 http://www.wisegeek.com/what-is-a-firewire-to-usb-adapter.htm
 http://www.alibaba.com/showroom/usb-to-firewire-converter.html
 
 Search Google : convert usb to firewire adapter
 
 HTH
 
 ..
 
 Peter Sealy
 Thurgoona AUSTRALIA
 
 She was only a whiskey maker, but he loved her still.
 
 
 
 On 26/04/2012, at 11:28 PM, Merv Bond wrote:
 
 I have been looking on the net at cables, converters and hubs that boast
 connections between USB and firewire. My search is based on wishing to
 connect an external HD with USB3 sockets to my iMac which has a
 Firewire800 socket. Has anyone used such a cable and if so is the
 performance of a quality that is useful? Can a bootable external HD be
 achieved with such a device?
 Merv
 -- 
 The whole psychology of modern disquiet is linked with the sudden
 confrontation with space-time. (Teilhard de Chardin, 'The Phenomenon of
 Man')
 -- The WA Macintosh User Group Mailing List --
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Re: Cables: USB 3 - Firewire800

2012-04-27 Thread Merv Bond
Thank you everyone for your responses. A dealer I spoke to suggested 
such a cable existed but they didn't have one in stock. However, having 
read all your responses I decided that if indeed it did exist there was 
the potential for unpleasant outcomes.
I have just returned from a shopping trip with a 2TB WD My Book Studio 
with Firewire 800 - which raises another question, so I will start a new 
thread.
Regards to all
Merv


On 27/04/12 9:03 AM, Daniel Kerr wrote:
 Got in before I did Carlo :) So won't rehash what you've written,..lol :)
 But yes, I'd be a bit cautious. The other thing would be if you'd see any 
 real world speed difference. The USB3 would only be running at USB2 speed 
 as that is what the Mac would expect, so it's not going to convert to 
 Firewire speeds, so I think you'd still be gaining USB2 speeds anyway. So no 
 real improvement.
 I could be wrong here, but I also had the impression there were differing 
 data versus power consumptions through both a USB and Firewire cable. (ie 
 one pulls through or expects more power and data then the other). So wouldn't 
 want to fry anything if there was. Again, I could be wrong there,...

 Found this info as well, which may help with it...
 /quote
 Firewire is isochronous, basically meaning that you can pump clocked data 
 though it in real time. USB works more like TCPIP, with the data chopped up 
 into packets and later reassembled. (Thus, at a minimum, you have latency, 
 that is, the wait for the data to be put back together.) Second, the 
 Firewire protocol allows more direct address to memory (including mass 
 storage) with minimal intervention of the CPU.
 /end quote

 I can't lay my hands on the other info I thought I had and Siri can only do 
 so much when driving,..lol ;)

 Kind regards
 Daniel

 Sent from my iPhone 4s

 ---
 Daniel Kerr
 MacWizardry

 Phone: 0414 795 960
 Email:daniel  AT macwizardry.com.au
 Web:http://www.macwizardry.com.au


 **For everything Macintosh**

 On 27/04/2012, at 8:46 AM, cm wrote:

 Hi Merv and Peter,

 I would be wary of those connectors. Notice they are all on resale sites, 
 none are manufacturer sales. They could be fakes.

 As I said earlier, I don't believe it is possible to convert USB to Firewire 
 with just a simple pin-to-pin cable. USB used the PC as the bus master 
 whereas Firewire is a true peer-to-peer connection and required handshaking 
 signals back from the disk drive.

 Cheers,
 Carlo


 On 27/04/2012, at 7:10 , Peter Sealy wrote:

 I thought I had a vague memory (at my age all memories are vague) of seeing 
 USB to Firewire converters somewhere. So I did a quick Google search and 
 came up with these. I have not looked in depth at any of them and have not 
 explored any further but the Google search will surely find more info.

 http://www.ebay.com/sch/sis.html?_kw=USB+A+MALE+TO+IEEE1394+4+PIN+Firewire+ADAPTER+CONVERTER
 http://www.amazon.com/NEEWER®-Travel-Firewire-Cable-Adapters/dp/B00354MVP0
 http://www.ask.com/questions-about/Firewire-USB-Converter
 http://www.wisegeek.com/what-is-a-firewire-to-usb-adapter.htm
 http://www.alibaba.com/showroom/usb-to-firewire-converter.html

 Search Google : convert usb to firewire adapter

 HTH

 ..

 Peter Sealy
 Thurgoona AUSTRALIA

 She was only a whiskey maker, but he loved her still.



 On 26/04/2012, at 11:28 PM, Merv Bond wrote:

 I have been looking on the net at cables, converters and hubs that boast
 connections between USB and firewire. My search is based on wishing to
 connect an external HD with USB3 sockets to my iMac which has a
 Firewire800 socket. Has anyone used such a cable and if so is the
 performance of a quality that is useful? Can a bootable external HD be
 achieved with such a device?
 Merv
 --
 The whole psychology of modern disquiet is linked with the sudden
 confrontation with space-time. (Teilhard de Chardin, 'The Phenomenon of
 Man')
 -- The WA Macintosh User Group Mailing List --
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-- 
The whole psychology of modern 

Cables: USB 3 - Firewire800

2012-04-26 Thread Merv Bond
I have been looking on the net at cables, converters and hubs that boast 
connections between USB and firewire. My search is based on wishing to 
connect an external HD with USB3 sockets to my iMac which has a 
Firewire800 socket. Has anyone used such a cable and if so is the 
performance of a quality that is useful? Can a bootable external HD be 
achieved with such a device?
Merv
-- 
The whole psychology of modern disquiet is linked with the sudden 
confrontation with space-time. (Teilhard de Chardin, 'The Phenomenon of 
Man')
-- The WA Macintosh User Group Mailing List --
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Re: Cables: USB 3 - Firewire800

2012-04-26 Thread cm
Hi Merv,

As far as I know USB and firewire are incompatible formats. Unless there is 
some sort of fancy conversion hub involved (that I am not aware of) no cable 
will be able to connect the two.

Cheers,
Carlo

On 26/04/2012, at 21:28 , Merv Bond wrote:

 I have been looking on the net at cables, converters and hubs that boast 
 connections between USB and firewire. My search is based on wishing to 
 connect an external HD with USB3 sockets to my iMac which has a 
 Firewire800 socket. Has anyone used such a cable and if so is the 
 performance of a quality that is useful? Can a bootable external HD be 
 achieved with such a device?
 Merv
 -- 
 The whole psychology of modern disquiet is linked with the sudden 
 confrontation with space-time. (Teilhard de Chardin, 'The Phenomenon of 
 Man')
 -- The WA Macintosh User Group Mailing List --
 Archives - http://www.wamug.org.au/mailinglist/archives.shtml
 Guidelines - http://www.wamug.org.au/mailinglist/guidelines.shtml
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Re: Cables: USB 3 - Firewire800

2012-04-26 Thread Stephen Chape
Hello Merv .. for cables  connectors go to www.cablechick.com.au


On 26/04/2012, at 9:28 PM, Merv Bond wrote:

 I have been looking on the net at cables, converters and hubs that boast 
 connections between USB and firewire. My search is based on wishing to 
 connect an external HD with USB3 sockets to my iMac which has a 
 Firewire800 socket. Has anyone used such a cable and if so is the 
 performance of a quality that is useful? Can a bootable external HD be 
 achieved with such a device?
 Merv
 -- 
 The whole psychology of modern disquiet is linked with the sudden 
 confrontation with space-time. (Teilhard de Chardin, 'The Phenomenon of 
 Man')
 -- The WA Macintosh User Group Mailing List --
 Archives - http://www.wamug.org.au/mailinglist/archives.shtml
 Guidelines - http://www.wamug.org.au/mailinglist/guidelines.shtml
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 http://lists.wamug.org.au/listinfo/wamug.org.au-wamug


Regards,
Stephen Chape




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Re: Cables: USB 3 - Firewire800

2012-04-26 Thread Daniel Kerr
Hi Merv

As others have mentioned there is no way to convert from USB to Firewire I'm 
afraid. Different standards etc.
So a USB3 drive will only run at USB2 speed on a Mac (well most of them).

Kind regards
Daniel
---
Daniel Kerr
MacWizardry

Phone: 0414 795 960
Email: daniel AT macwizardry.com.au
Web:   http://www.macwizardry.com.au


**For everything Macintosh**

On 26/04/2012, at 9:28 PM, Merv Bond wrote:

 I have been looking on the net at cables, converters and hubs that boast 
 connections between USB and firewire. My search is based on wishing to 
 connect an external HD with USB3 sockets to my iMac which has a 
 Firewire800 socket. Has anyone used such a cable and if so is the 
 performance of a quality that is useful? Can a bootable external HD be 
 achieved with such a device?
 Merv
 -- 
 The whole psychology of modern disquiet is linked with the sudden 
 confrontation with space-time. (Teilhard de Chardin, 'The Phenomenon of 
 Man')
 -- The WA Macintosh User Group Mailing List --
 Archives - http://www.wamug.org.au/mailinglist/archives.shtml
 Guidelines - http://www.wamug.org.au/mailinglist/guidelines.shtml
 Settings  Unsubscribe - 
 http://lists.wamug.org.au/listinfo/wamug.org.au-wamug

-- The WA Macintosh User Group Mailing List --
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Re: Cables: USB 3 - Firewire800

2012-04-26 Thread cm
Hi Merv and Peter,

I would be wary of those connectors. Notice they are all on resale sites, none 
are manufacturer sales. They could be fakes.

As I said earlier, I don't believe it is possible to convert USB to Firewire 
with just a simple pin-to-pin cable. USB used the PC as the bus master whereas 
Firewire is a true peer-to-peer connection and required handshaking signals 
back from the disk drive.

Cheers,
Carlo


On 27/04/2012, at 7:10 , Peter Sealy wrote:

 I thought I had a vague memory (at my age all memories are vague) of seeing 
 USB to Firewire converters somewhere. So I did a quick Google search and came 
 up with these. I have not looked in depth at any of them and have not 
 explored any further but the Google search will surely find more info.
 
 http://www.ebay.com/sch/sis.html?_kw=USB+A+MALE+TO+IEEE1394+4+PIN+Firewire+ADAPTER+CONVERTER
 http://www.amazon.com/NEEWER®-Travel-Firewire-Cable-Adapters/dp/B00354MVP0
 http://www.ask.com/questions-about/Firewire-USB-Converter
 http://www.wisegeek.com/what-is-a-firewire-to-usb-adapter.htm
 http://www.alibaba.com/showroom/usb-to-firewire-converter.html
 
 Search Google : convert usb to firewire adapter
 
 HTH
 
 ..
 
 Peter Sealy
 Thurgoona AUSTRALIA
 
 She was only a whiskey maker, but he loved her still.
 
 
 
 On 26/04/2012, at 11:28 PM, Merv Bond wrote:
 
 I have been looking on the net at cables, converters and hubs that boast 
 connections between USB and firewire. My search is based on wishing to 
 connect an external HD with USB3 sockets to my iMac which has a 
 Firewire800 socket. Has anyone used such a cable and if so is the 
 performance of a quality that is useful? Can a bootable external HD be 
 achieved with such a device?
 Merv
 -- 
 The whole psychology of modern disquiet is linked with the sudden 
 confrontation with space-time. (Teilhard de Chardin, 'The Phenomenon of 
 Man')
 -- The WA Macintosh User Group Mailing List --
 Archives - http://www.wamug.org.au/mailinglist/archives.shtml
 Guidelines - http://www.wamug.org.au/mailinglist/guidelines.shtml
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 http://lists.wamug.org.au/listinfo/wamug.org.au-wamug
 
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Re: Cables: USB 3 - Firewire800

2012-04-26 Thread Daniel Kerr
Got in before I did Carlo :) So won't rehash what you've written,..lol :)
But yes, I'd be a bit cautious. The other thing would be if you'd see any real 
world speed difference. The USB3 would only be running at USB2 speed as that 
is what the Mac would expect, so it's not going to convert to Firewire 
speeds, so I think you'd still be gaining USB2 speeds anyway. So no real 
improvement.
I could be wrong here, but I also had the impression there were differing data 
versus power consumptions through both a USB and Firewire cable. (ie one pulls 
through or expects more power and data then the other). So wouldn't want to fry 
anything if there was. Again, I could be wrong there,...

Found this info as well, which may help with it...
/quote
Firewire is isochronous, basically meaning that you can pump clocked data 
though it in real time. USB works more like TCPIP, with the data chopped up 
into packets and later reassembled. (Thus, at a minimum, you have latency, that 
is, the wait for the data to be put back together.) Second, the Firewire 
protocol allows more direct address to memory (including mass storage) with 
minimal intervention of the CPU.
/end quote

I can't lay my hands on the other info I thought I had and Siri can only do so 
much when driving,..lol ;)

Kind regards
Daniel

Sent from my iPhone 4s

---
Daniel Kerr
MacWizardry

Phone: 0414 795 960
Email: daniel  AT macwizardry.com.au
Web:   http://www.macwizardry.com.au


**For everything Macintosh**

On 27/04/2012, at 8:46 AM, cm wrote:

 Hi Merv and Peter,
 
 I would be wary of those connectors. Notice they are all on resale sites, 
 none are manufacturer sales. They could be fakes.
 
 As I said earlier, I don't believe it is possible to convert USB to Firewire 
 with just a simple pin-to-pin cable. USB used the PC as the bus master 
 whereas Firewire is a true peer-to-peer connection and required handshaking 
 signals back from the disk drive.
 
 Cheers,
 Carlo
 
 
 On 27/04/2012, at 7:10 , Peter Sealy wrote:
 
 I thought I had a vague memory (at my age all memories are vague) of seeing 
 USB to Firewire converters somewhere. So I did a quick Google search and 
 came up with these. I have not looked in depth at any of them and have not 
 explored any further but the Google search will surely find more info.
 
 http://www.ebay.com/sch/sis.html?_kw=USB+A+MALE+TO+IEEE1394+4+PIN+Firewire+ADAPTER+CONVERTER
 http://www.amazon.com/NEEWER®-Travel-Firewire-Cable-Adapters/dp/B00354MVP0
 http://www.ask.com/questions-about/Firewire-USB-Converter
 http://www.wisegeek.com/what-is-a-firewire-to-usb-adapter.htm
 http://www.alibaba.com/showroom/usb-to-firewire-converter.html
 
 Search Google : convert usb to firewire adapter
 
 HTH
 
 ..
 
 Peter Sealy
 Thurgoona AUSTRALIA
 
 She was only a whiskey maker, but he loved her still.
 
 
 
 On 26/04/2012, at 11:28 PM, Merv Bond wrote:
 
 I have been looking on the net at cables, converters and hubs that boast 
 connections between USB and firewire. My search is based on wishing to 
 connect an external HD with USB3 sockets to my iMac which has a 
 Firewire800 socket. Has anyone used such a cable and if so is the 
 performance of a quality that is useful? Can a bootable external HD be 
 achieved with such a device?
 Merv
 -- 
 The whole psychology of modern disquiet is linked with the sudden 
 confrontation with space-time. (Teilhard de Chardin, 'The Phenomenon of 
 Man')
 -- The WA Macintosh User Group Mailing List --
 Archives - http://www.wamug.org.au/mailinglist/archives.shtml
 Guidelines - http://www.wamug.org.au/mailinglist/guidelines.shtml
 Settings  Unsubscribe - 
 http://lists.wamug.org.au/listinfo/wamug.org.au-wamug
 
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RE: Cables: USB 3 - Firewire800

2012-04-26 Thread hugh griffiths

The power issue is the one I would be the most cautious with, USB is 5 v or 
less, but firewire can be up to 40 V ( different ampages as well and I would be 
very worried as the pins for power would be different as well)

Hugh

 Subject: Re: Cables: USB 3 - Firewire800
 From: wa...@macwizardry.com.au
 Date: Fri, 27 Apr 2012 09:03:27 +0800
 To: wamug@wamug.org.au
 
 Got in before I did Carlo :) So won't rehash what you've written,..lol :)
 But yes, I'd be a bit cautious. The other thing would be if you'd see any 
 real world speed difference. The USB3 would only be running at USB2 speed 
 as that is what the Mac would expect, so it's not going to convert to 
 Firewire speeds, so I think you'd still be gaining USB2 speeds anyway. So no 
 real improvement.
 I could be wrong here, but I also had the impression there were differing 
 data versus power consumptions through both a USB and Firewire cable. (ie 
 one pulls through or expects more power and data then the other). So wouldn't 
 want to fry anything if there was. Again, I could be wrong there,...
 
 Found this info as well, which may help with it...
 /quote
 Firewire is isochronous, basically meaning that you can pump clocked data 
 though it in real time. USB works more like TCPIP, with the data chopped up 
 into packets and later reassembled. (Thus, at a minimum, you have latency, 
 that is, the wait for the data to be put back together.) Second, the 
 Firewire protocol allows more direct address to memory (including mass 
 storage) with minimal intervention of the CPU.
 /end quote
 
 I can't lay my hands on the other info I thought I had and Siri can only do 
 so much when driving,..lol ;)
 
 Kind regards
 Daniel
 
 Sent from my iPhone 4s
 
 ---
 Daniel Kerr
 MacWizardry
 
 Phone: 0414 795 960
 Email: daniel  AT macwizardry.com.au
 Web:   http://www.macwizardry.com.au
 
 
 **For everything Macintosh**
 
 On 27/04/2012, at 8:46 AM, cm wrote:
 
  Hi Merv and Peter,
  
  I would be wary of those connectors. Notice they are all on resale sites, 
  none are manufacturer sales. They could be fakes.
  
  As I said earlier, I don't believe it is possible to convert USB to 
  Firewire with just a simple pin-to-pin cable. USB used the PC as the bus 
  master whereas Firewire is a true peer-to-peer connection and required 
  handshaking signals back from the disk drive.
  
  Cheers,
  Carlo
  
  
  On 27/04/2012, at 7:10 , Peter Sealy wrote:
  
  I thought I had a vague memory (at my age all memories are vague) of 
  seeing USB to Firewire converters somewhere. So I did a quick Google 
  search and came up with these. I have not looked in depth at any of them 
  and have not explored any further but the Google search will surely find 
  more info.
  
  http://www.ebay.com/sch/sis.html?_kw=USB+A+MALE+TO+IEEE1394+4+PIN+Firewire+ADAPTER+CONVERTER
  http://www.amazon.com/NEEWER®-Travel-Firewire-Cable-Adapters/dp/B00354MVP0
  http://www.ask.com/questions-about/Firewire-USB-Converter
  http://www.wisegeek.com/what-is-a-firewire-to-usb-adapter.htm
  http://www.alibaba.com/showroom/usb-to-firewire-converter.html
  
  Search Google : convert usb to firewire adapter
  
  HTH
  
  ..
  
  Peter Sealy
  Thurgoona AUSTRALIA
  
  She was only a whiskey maker, but he loved her still.
  
  
  
  On 26/04/2012, at 11:28 PM, Merv Bond wrote:
  
  I have been looking on the net at cables, converters and hubs that boast 
  connections between USB and firewire. My search is based on wishing to 
  connect an external HD with USB3 sockets to my iMac which has a 
  Firewire800 socket. Has anyone used such a cable and if so is the 
  performance of a quality that is useful? Can a bootable external HD be 
  achieved with such a device?
  Merv
  -- 
  The whole psychology of modern disquiet is linked with the sudden 
  confrontation with space-time. (Teilhard de Chardin, 'The Phenomenon of 
  Man')
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