Installation Manuals
1. 
USB-Serial,RS-232
Models
USB to Single RS-232
USB to Dual RS-232
USBG-2COM-M
2x232P1
USB to Quad RS-232
USBG2-4COM-M
4x232P1
USB to Octal RS-232
USBG2-8COM-M
USB to Sixteen RS-232
USB to Thirty-two RS-232
 

2.

USB-Industrial,RS-422/485

Models

USB to Single RS-422/485
USB to Dual RS-422/485
USB to Quad RS-422/485
USB to Octal RS-422/485
USB to Sixteen RS-422/485
 

3.

USB-Industrial,RS-232/422/485

Models

USB to Single RS-232/422/485 (Metal)
USB to Octal RS-232/422/485 (Metal)
USB to Sixteen RS-232/422/485 (Metal)