Esato

Forum > Sony Ericsson / Sony > General > K750i usb speed ?

Author K750i usb speed ?
colinw
T68 gold
Joined: May 22, 2005
Posts: 22
PM
Posted: 2005-07-14 14:08
Reply with quoteEdit/Delete This PostPrint this post
Just a quicky, i keep hearing this phone has true usb support, but i assumed this meant usb 2 for some reason.

But i don't think it is, as when i copy a 100mb album over to the memory card in the phone it takes about 5 mins to go over. !!

So is it just a usb 1 interface ?

Thanks.......
numb
K850 Blue
Joined: Feb 07, 2005
Posts: > 500
PM
Posted: 2005-07-14 14:29
Reply with quoteEdit/Delete This PostPrint this post
USB2 is not automatically USB 2 Highspeed, USB2 is a development of the USB 1.1 standard, but comes in different speeds. Normal speed is the same on USB 1.1 and USB2 but USB2 also support a Highspeed 480mbits mode. If an usb device is not marked as USB2 Highspeed it only supports normal USB speed

K750 supports both USB1.1 and USB2 standards, but not Highspeed.

Did that help, or did it only make it more cofusing ?




[ This Message was edited by: numb on 2005-07-14 13:31 ]
marct
K750
Joined: Jul 04, 2005
Posts: 16
PM
Posted: 2005-07-14 15:29
Reply with quoteEdit/Delete This PostPrint this post
i haven't read the specs, but one look at the pretty long USB cable which came with the k750, it seemed improbable that it would support USB2.0 High Speed (480Mb/s). It's highly likely that the k750 only uses Full Speed (12Mb/s).
Itanium
K750
Joined: Jun 13, 2005
Posts: 77
PM
Posted: 2005-07-14 15:42
Reply with quoteEdit/Delete This PostPrint this post
Quote:
...but one look at the pretty long USB cable which came with the k750, it seemed improbable that it would support USB2.0 High Speed...


You can tell by looking at cable how when where why when?
colinw
T68 gold
Joined: May 22, 2005
Posts: 22
PM
Posted: 2005-07-14 17:43
Reply with quoteEdit/Delete This PostPrint this post
ok thanks, yes that makes sense to me. I forgot about the normal and high speed modes of usb2.

Thanks for that anyway....
marct
K750
Joined: Jul 04, 2005
Posts: 16
PM
Posted: 2005-07-15 08:27
Reply with quoteEdit/Delete This PostPrint this post
Quote:

On 2005-07-14 15:42:48, Itanium wrote:
You can tell by looking at cable how when where why when?



i'm sorry, my bad. that was a wrong assumption on my part. the maximum cable length of usb2 is about 15 feet, and the supplied usb cable with the k750 is still far from that.

sorry for the wrong information and i hope nobody believed my previous post
Access the forum with a mobile phone via esato.mobi