CTW Fan Module Connectors Amphenol Commercial Card-to-Wire (CTW) Fan Module Connectors come with a flexible design for CTW power applications used in fan modules. These CTW connectors allow different wire gauges ranging from 28AWG to 22AWG. The CTW connectors provide a maximum current rating of 4A/pin. These fan module connectors are available in standard and smart versions and offer a cost-effective solution with a smaller airflow drop compared to conventional card-to-board fan connector solutions.