Document Reference No.: ES_000030

USB2-H-6004 Hi-Speed USB to 4-Port RS422 Adapter Data Sheet

Version 1.01

Clearance No.: ES

#24

©2010 EasySync Ltd.

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1 Introduction

The USB-COM-Plus adaptors are a family of communication devices. This model, USB2-H-6004, provides

a simple method of adapting legacy serial devices with RS422 interfaces to a modern USB 2.0 Hi-Speed

port. This is accomplished by incorporating the industry standard FTDI FT4232H Hi-Speed USB-Serial

bridge chip.

Each USB2-H-6004 adapter contains a small internal electronic circuit board which utilises the FTDI

FT4232H, mounted inside a rugged plastic enclosure capable of withstanding industrial temperature

ranges. The integrated electronics also include RS422 level shifters and TXD/RXD LEDs to provide a

visual indication of data traffic through the adapter.

Figure 1.1 USB-COM-Plus USB2-H-6004

Flexible mounting allows the USB2-H-6004 to be used in a variety of applications, from a portable

adapter to accompany a laptop to permanent installations in industrial, commercial and retail locations.

The enclosure incorporates a standard USB-Mini B client connector for connection to an upstream host or

hub port. RS422-level signals are available on an industry-standard DE-9P connector. The maximum

RS422-level data rate is 10Mbps.

The USB2-H-6004 adapter require USB device drivers, available free from http://www.easysync.co.uk or

http://www.easysync-ltd.com, which are used to make the USB2-H-6004 appear as a Virtual COM Port

(VCP). This allows existing serial communications software, such as HyperTerminal, to exchange data

through the USB2-H-6004 to a legacy RS422 peripheral device.