JLCooper ES-450J_USB_User_Manual.pdf - Manual (Page 6)

Connecting
Connecting the ES-450J USB is straightforward. Simply connect
the ES-450J USB to a free USB port on your computer. The ES-
450J USB is powered from the USB port. The ES-450J USB
should be plugged into a self powered hub.
Windows XP SP2 and later, Vista and Windows 7 include drivers
that allow the ES-450J USB to appear as a virtual serial port.
Drivers for other operating systems can be obtained from:
http://www.ftdichip.com/Drivers/VCP.htm
To configure the ES-450J USB to operate with a specific software
application, refer to the setup documentation for that software
application.
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