<div dir="ltr"><div><div>If I recall correctly, the XO-1.5's serial adapter shares some circuitry with the camera. Booting an XO-1.5 with a serial adapter means you cannot use the latter.<br><br></div>To do this, the XO-1.5 looks for a resistor placed across two of the wires to see if a serial adapter is present. No other XO laptop model has this restriction.<br></div><div><br></div><div></div><div>Perhaps the older serial adapter simply lacks the sense resistor required for the XO-1.5 to switch modes.<br></div><div><br></div><br></div><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Oct 21, 2015 at 5:15 PM, James Cameron <span dir="ltr"><<a href="mailto:quozl@laptop.org" target="_blank">quozl@laptop.org</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><span class="">On Wed, Oct 21, 2015 at 11:38:02AM -0500, Peter Easthope wrote:<br>
> Seems that an adapter such as <a href="http://www.ebay.ca/itm/381346598663" rel="noreferrer" target="_blank">http://www.ebay.ca/itm/381346598663</a> ,<br>
</span>> similar to the first generation adapter, might work. [...]<br>
<br>
Doubt it. The product description is inadequate, it does not state<br>
the serial voltage. It does say supply voltage range. It does not<br>
have any serial control signal strapping. And it has an RS232<br>
connector, which nobody should need these days. ;-}<br>
<br>
Get a USB adapter instead. As long as the adapter is for 3.3V serial,<br>
it will work with the XO-1 host serial port. The adapter is powered<br>
from the USB host.<br>
<br>
The same seller has a more appropriate adapter for a lower price:<br>
<br>
<a href="http://www.ebay.com/itm/USB-TTL-Converter-Module-LED-CP2102-RX-TX-3-3V-5V-Output-/381153344387?hash=item58be827b83" rel="noreferrer" target="_blank">http://www.ebay.com/itm/USB-TTL-Converter-Module-LED-CP2102-RX-TX-3-3V-5V-Output-/381153344387?hash=item58be827b83</a><br>
<br>
There are now very many alternative adapters that are compatible.<br>
<span class="HOEnZb"><font color="#888888"><br>
--<br>
James Cameron<br>
<a href="http://quozl.linux.org.au/" rel="noreferrer" target="_blank">http://quozl.linux.org.au/</a><br>
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