That USB cable still has a serial adapter inside, probably a Prolific. You just don't see it.

Personally, I have had nothing but trouble with the Prolific adapters - including the ones built in to my ICom cable, my GPS receiver, and the USB Serial adapter I used for rig control for my TS-2000. I ended up ditching all the Prolific stuff and going with FTDI or internal RS-232 ports where possible.

My GPS? A $30 paperweight.
---
Tom Wilson
Sent from my Motorola Droid

On Jun 7, 2012 2:39 PM, "D.J.J. Ring, Jr." <n1ea@arrl.net> wrote:
I use a USB connector with a G4ZLP interface, no serial cable used at all.
eBay has similar cables which they sell starting at $18.00 http://is.gd/6261DP

73
David N1EA

On Thu, Jun 7, 2012 at 2:48 PM, John Johnson <jj31234@tampabay.rr.com> wrote:
Thank you for the feedback.  I have narrowed down the problem to my Dell
notebook.  If I use my ASUS notebook (using a USB to serial cable since
it does not have a physical serial port) I am able to both download and
upload the memories with no problem.  I am unsure what the problem is
with the Dell; I have checked all of the settings and they appear
correct.  At this point I am not concerned since all the Dell runs is
HRD, DM780, logbook, and JT-65hf.

CHIRP is a great product.
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