[PLUG] Experiences with USB "null modem" cables.

[Richard Owlett]

On 05/30/2018 03:43 PM, Russell Senior wrote:
> The one I have implements a USB-net interface,

I did a DuckDuckGo search for "USB-net interface" {with/without quotes}.
Found several interesting links, but not sure if any are what you are 
speaking of. A link to specific device(s) you refer to?

> so it's effectively an ethernet cable.

I purposely used the term "null modem". I date from an  era/industry 
where where 20 mA current loop was preferred over RS-232C for its noise 
immunity. Since USB 1.0 I've considered "universal" of USB an 
unfortunate choice of adjectives. The intrinsic implementation of 
hardware to forever be either a *MASTER* or slave is annoying.

>  Most modern distributions just work.  The one you link is
> a USB-to-serial-to USB.  That is not ideal for transferring files.

Depends on your metric.

>If you
> are unclear on what the "link" cable supports, you can always just buy two
> usb-ethernet adapters and an ethernet cable to go in the middle.
That explicitly is to be avoided as an unnecessary complication.

> Maybe more adpatable than a "link cable".

I want a USB cable that is as functional (my metric) as a RS-232 cable 
of decades past. The only observable difference would be max available 
speed.



> 
> On Wed, May 30, 2018 at 12:49 PM, Richard Owlett <rowlett at cloud85.net>
> wrote:
> 
>> ARGHHH. New it was going to be that kind of day ;/
>> Any problems &/or comments?
>>
>>
>>
>> On 05/30/2018 01:53 PM, Russell Senior wrote:
>>
>>> Yes
>>>
>>> On Wed, May 30, 2018, 10:54 Richard Owlett <rowlett at cloud85.net> wrote:
>>>
>>> I've come across a "USB Null Modem Cable" by Future Technology Devices
>>>> International [http://www.ftdichip.com/Products/Cables/USBtoUSB.htm].
>>>>
>>>> It would seem an appropriate solution for some file sharing between two
>>>> Linux machines which have only USB 2.0 in common.
>>>>
>>>> Has anyone used this or a similar product.
>>>> TIA
>>>>
>>>>
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