Buttons and Ports

Button and port functions on your LinkRunner AT tester are described below.

Feature	Description
Status LED	Red: tester off, USB-C power adapter connected Green: tester on, screen off (with or without power adapter) Rate of blinking LED (red or green) shows % battery charge: 2 blinks per second: battery low, 0-24% charged 1 blink per second: 25-49% charged 1 blink per 2 seconds: 50-74% charged 1 blink per 4 seconds: ≥75% charged No blinks: fully charged
RJ-45 Wire Mapping Port	Internal wire mapper port used for loopback cable testing
RJ-45 Ethernet Port with Cable Test	General purpose port for linking to a network, running a cable test, including Tone and Flash Port functions Supports PoE (with compatible unit hardware)
USB Type-A Port	Connects to any USB device. (FAT32-formatted device required only for manual software updates.)
USB Type-C On-the-Go Port	Connects to a USB Type-C connector for file transfer and to charge tester with the included AC adapter
Volume Buttons	Increase or decrease the audio volume for external Bluetooth or USB speakers or headsets
Power Button	Press and hold to display menu for Power off or Restart
Speaker	Produces audio

See Test and Management Ports for detailed explanations of the port functions.

See Updating Software for requirements on updating system software.

Refer to the product Specifications if needed.

Using a Kensington Lock

The back panel of the unit has two rows of six vent slots on either side of the serial number label. You can use a standard Kensington lock with any slot in these two rows.