[Coco] COM Retention

[Robert Hermanek]

Looking at StarTech USB to Serial adapters, they have nice 4 port units 
for around $60, and they use the FTDI chipset, so nice drivers that you 
can tweak a lot of the usb-to-serial behaviors. In particular looking at 
ICUSB2324 model on Newegg.  However for about $20 more you can buy 
similar units with "COM retention." Anyone have an explanation as to 
what that is, and whether it would be helpful/hindrance when interfacing 
with coco?

-RobertH