Re: Useful Gadget of the Week: USB to 4 RS-232 Serial Ports

[Joseph Heenan <joseph-l@xxxxxxxxxxxx>]

I've come across startech recently, they seem to have some reasonable
and not hugely expensive usb<>serial - this one has COM port
retention:

http://uk.startech.com/Cards-Adapters/Serial-Cards-Adapters/1-ft-USB-to-RS232-Serial-DB9-Adapter-Cable-with-COM-Retention~ICUSB232PRO

or:

http://tinyurl.com/3w4w4ll

(a google search for ICUSB232PRO will turn up other vendors)


They do a 2 port at 31.99, but I don't think they do a 4 port
unfortunately. They also have a single port prolific one that has
genuine prolific chips.

Don't think I'd use anything that cheap in a medical setting though!


Joseph


On 04/08/2011 10:17, Phil Harris wrote:
> Whyzat?
>
> W.R.T. the original "Prolific chipset" issue raised I have
to say that the Prolific units I've had in the past have been OK for
non-critical use (programming C-Bus, HomeVision etc.) but - as I think was
the suggestion from the follow-up post - sometimes they *CAN* disconnect
and reconnect as a different COM port. If you're using USB to serial
adapters in a commercial (or, more importantly, medical or other mission
critical environment) then I wouldn't risk the consumer level USB to serial
interfaces.
>
> For my own "critical" stuff (i.e. HomeGate interface to
RS232 equipped kit) I have a couple of the KeySpan USB to four serial port
adapters. They're expensive and I don't know whether they are still made
but they've been absolutely bulletproof and have worked in scenarios
(programming up logic boards and running test kit at work) where other USB
to serial adapters have failed. They also come up repeatedly as the same
serial port no matter which USB port on the machine they find themselves
attached to.
>
> Cheers
>
> Phil
>
> -----Original Message-----
> From: ukha_d@xxxxxxx [mailto:ukha_d@xxxxxxx] On Behalf Of Stuart
Poulton
> Sent: 04 August 2011 09:37
> To: ukha_d@xxxxxxx
> Subject: Re: [ukha_d] Useful Gadget of the Week: USB to 4 RS-232
Serial Ports
>
> Out of interest, would USB to serial convertors where the serial
> connection is an RJ45 socket be of interest to anyone ?
>
> Stuart
>
>
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