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USB Question

Started by FORTRANS, March 31, 2013, 07:30:18 AM

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Magnum

My laptop has a nine pin connector and a 15 female connector.

I read where the serial cable can be used to transfer data between computers but I guess it's pretty slow.

Take care,
                   Andy

Ubuntu-mate-18.04-desktop-amd64

http://www.goodnewsnetwork.org

dedndave

yes - it would be slow
the 15-pin is for a VGA monitor

farrier

If you have a combination eSata/USB port--as I do on my laptop--you can use something like this:

http://www.amazon.com/Gino-eSATA-Combo-Female-Power/dp/B007PODO3E/ref=pd_sbs_misc_3

provides power for a 2.5" drive and an eSata speed connection.  Much faster than the external USB caddies or cable.

hth,

farrier
For the code is dark, and full of errors!
It's a good day to code!
Don't Bogart that code, my friend!

sinsi

farrier, it depends on the USB version. I can get speeds the same as eSATA with a USB3-to-SATA adapter.
The problem with eSATA is the need for a separate power supply, although a 3.5" drive with USB3 needs external power (2.5" is OK).
USB2 is 480Mb/s, USB3 is 5Gb/s, eSATA is 6Gb/s (for SATA3). Most laptops still use SATA2 (3Gb/s), so a USB3 drive is actually faster.

ragdog

Hi

Connect to PC´s with usb for data transfer it works
you need a USB-High-Speed-PC-Link-cable

But is slow better is a Lan connection

farrier

sinsi,

Quote from: sinsi on April 01, 2013, 03:26:07 PM
farrier, it depends on the USB version. I can get speeds the same as eSATA with a USB3-to-SATA adapter.

Exactly, USB3 changes the whole story.  But if you're stuck with USB2, and have one of these eSataP--combination USB/eSata--ports, the difference is night and day.  The USB part of the eSataP port provides the 5V power for a 2.5" drive, I haven't tried connecting to a 3.5" drive.

farrier
For the code is dark, and full of errors!
It's a good day to code!
Don't Bogart that code, my friend!

dedndave

most drives require +5 and +12
USB does not provide +12

that's why i just use an adapter and stick the drive in my desktop by connecting to a SATA port
well - and it's fast, too   :P

dedndave

the adapter i bought is for a 2.5/3.5 SATA drive
i paid ~$4 about 2 years ago, but i see the guy on amazon has it marked up to $20, now - lol
i am sure you could find it for much less by shopping around a little

just a guess - Steve's laptop is older - and it may use an IDE interface
same idea, just know what you need before you buy an adapter

FORTRANS

Hi,

Quote from: Magnum on April 01, 2013, 08:33:19 AM
I read where the serial cable can be used to transfer data between computers but I guess it's pretty slow.

   Well, that depends.  There are different baud rates for one.
And who knows what the software is doing with error correction,
handshaking, or compression.  And what you define as slow.
Anyway I just did a subjective test on a setup I have here, and
it seems a bit less than a tenth of a floppy diskette.  But it is the
only way those two computers communicate.  And thus the
fastest way by default.

Quote from: dedndave on April 02, 2013, 12:04:53 AM
just a guess - Steve's laptop is older - and it may use an IDE interface
same idea, just know what you need before you buy an adapter

   Well, my laptops are older, but the one I was looking at is
someone else's, and is newer.

Cheers,

Steve N.

Magnum

This looks like it covers most  drives.

http://www.starsurplus.com/viewitem.lasso?i=2020
Take care,
                   Andy

Ubuntu-mate-18.04-desktop-amd64

http://www.goodnewsnetwork.org

Magnum

This looks fairly fast at 30 Gb/hour.

http://www.walmart.com/ip/Belkin-Easy-Transfer-Cable-for-Windows-Vista/5555531
Take care,
                   Andy

Ubuntu-mate-18.04-desktop-amd64

http://www.goodnewsnetwork.org

P1

Quote from: hutch-- on March 31, 2013, 02:13:28 PM
Sinsi is right, its a NO NO. Stick to TCP/IP with networking, its safe, fast and reliable. Get yourself two 1 gigabit PCI cards, use a twist cable and it will be a kick ass high speed connection, generally faster than either computer. I use a couple of 1gb hubs for a network and its close to being as fast as a twist cable between 2 computers and easily fast enough to back up partitions from one computer to another.
QuoteUSB 2.0 debugging cable/port. Although, setting up USB debugging can take a bit more investment and time, USB might be the only externally exposed port that is capable of debugging on certain laptops and netbooks.
http://blogs.msdn.com/b/usbcoreblog/archive/2010/10/25/setting-up-kernel-debugging-with-usb-2-0.aspx

This looked interesting enough to mention for FORTRANS.

Regards,  P1   8)

FORTRANS

Hi,

   Thank you for the link to a good article.

Regards,

Steve N.

GoneFishing

Thank you , P1!
That article is a perfect answer to my question in this thread either :t