New: USB 2.0 to Serial Adapter RS-422 RS-485 DB9 4-Port IU-120

USB 2.0 to Serial Adapter RS-422 RS-485 DB9 4-Port IU-120

The IU-120 USB 2.0 to 2 port Serial Adapter RS-422 RS-485 provides an easy way to add a serial ports to your desktop or notebook computer. This USB to four port RS-422/RS-485 Serial Adapter functions as a converter between a USB port and standard serial ports. You can easily connect this adapter to the USB port on your PC or USB hub and get access to any RS-422/485 devices. Made of rugged metal, and featuring a mounting bracket, the USB 2.0 to Serial Adapter RS-422 RS-485 DB9 4-Port IU-120 is suitable for portable devices, and industrial applications.

New: USB 2.0 to Serial Adapter RS-422 RS-485 DB9 2-Port IU-110

The IU-110 USB 2.0 to 2 port Serial Adapter RS-422 RS-485 provides an easy way to add a serial ports to your desktop or notebook computer. This USB to two port RS-422/RS-485 Serial Adapter functions as a converter between a USB port and standard serial ports. You can easily connect this adapter to the USB port on your PC or USB hub and get access to any RS-422/485 devices. Made of rugged metal, and featuring a mounting bracket, the USB 2.0 to Serial Adapter RS-422 RS-485 DB9 2-Port IU-110 is suitable for portable devices, and industrial applications.

Device-side Pin Assignments for IU-100, IU-110, and IU-120

This information is applicable to the following Synchrotech part numbers.

• USB-SIO-IU-100
• USB-SIO-IU-110
• USB-SIO-IU-120

These USB to serial devices feature DB9 connectors, frequently used in RS-232 applications. RS-422 and RS-485 tend to use different connectors, so speciality cables (e.g. DB9 to Mini Din 8) are often needed to accommodate certain serial peripherals. The above image and following table should be helpful in selecting or designing application specific cables to deploy with the IU-1** series USB to Serial device.

Pin	Transmission Signals
	RS-422	4-Wire RS-485	2-Wire RS-485
1	Tx-	Tx-	D-
2	Tx+	Tx+	D+
3	Rx+	Rx+
4	Rx-	Rx-
5	GND	GND	GND

See the user manuals for the individual devices for further information including: DIP Switch settings, and internal jumper settings.