USB Extension Cable Sets Industrial Shields USB Extension Cable Sets are designed to connect the PLC to a desktop or laptop computer. The IS.ACAMMICROB-2M is a USB extension cable with a configuration of USB A male to USB A female. The IS.ACAMUSBB-1.5M is a USB extension cable with a configuration of USB A male to USB A female. This cable accepts a data transfer rate of 480Mbps connected to a USB 2.0 host controller.