The CIU-3 is a USB interface for communications between Link-supported devices (such as a S.BUS servo , Gyro and ESC) and Windows computer.

The CIU-3 is an updated version of the CIU-2 in that it does not need any additional Windows driver software to be installed.

Specs:
Interface: USB Rev2.0 compliant
USB connector: USB Series A connector
Operating voltage: 5.0 V +/-0.2 V (USB bus power)
Current drain (At connection, idle): 5.8 +/-1.7mA
Operating environment: Temperature -10 to +45 C
Dimensions: 18.2 x 56.5 x 9.0 mm
Weight: 7.5 g
Applicable OS: WindowsVista/7/8/8.1/10