USB to Serial (RS-232 / RS-422/485)

Cables to Go 268861.5ft USB to DB9 Serial Adapter Cable
$31.99
C2G 268875ft USB to DB9 Male Serial RS232 Adapter Cable
$39.99
C2G 26478USB to 2-Port DB9 Serial RS232 Adapter - Discontinued
$85.99
C2G 224296ft USB to DB25 Serial RS232 Adapter Cable
$52.99 $33.75
Aten UC232A5PKUSB to Serial Converter, (5-Pack)
$85.00 $68.58
Aten UC23222-Port USB-to -Serial RS-232 Hub
$91.00 $71.35
Aten UC23244-Port USB-to -Serial RS-232 Hub
$92.00 $65.29
Aten UC48522-Port USB-to -Serial RS-422/485 Hub - Discontinued
$114.00 $95.82
IOGEAR GUC232A AdapterIOGEAR USB to PDA/Serial Adapter
$30.66