RS-232 Communications Adapters
From ATTWiki
Many USB to serial adapters have incomplete or incorrect RS-232 implementations. There are many that we have tested and have found to be defective.
Tripp-Lite Keyspan
The brand we know works well is the Tripp-Lite Keyspan.
MOXA
We trust MOXA for serial device servers. We have not tested their MOXA Uport unit - but it seems similar to the Keyspan.
http://www.moxa.com/product/UPort_1110.htm
In the MOXA Uport line, you can purchase units that go up to 16 ports through a single USB port.
Other Pages
See Cable Specs See VTube-LASER See VTube-STEP