Smart Cable Keyboard - Starrett 2700 - Starrett SmartCable™ makes it fast and easy to connect a measuring tool to a PC. The interface provides the ability to connect through USB keyboard outputs. With the SmartCable keyboard output, no software wedge or other intermediary software is required. The PC "sees" the connection from the SmartCable™ as a keyboard. Simply, open any document on your computer that accepts input, position your cursor, then send the data from the tool. That data will be input at the cursor location. Smartcable USB Keyboard Output - 2900 Indicators.