HP Engage Go 13.5 User Guide - Page 29

Attaching an optional fingerprint reader to the I/O connectivity base You can use the optional fingerprint reader as a standalone device, or you can attach it to the I/O connectivity base. To connect an optional fingerprint reader to the I/O connectivity base. NOTE: You can attach the fingerprint reader to either side of the I/O connectivity base, but if you attach it to the left side of the I/O connectivity base, the fingerprint reader covers the microSD slot and the headset jack on the I/O connectivity base. 1. Turn off the mobile system properly through the operating system, and turn off any external devices. 2. Disconnect the power cords from the mobile system and I/O connectivity base. IMPORTANT: Regardless of the power state, voltage is always present on the system board as long as the system is plugged into an active AC outlet. You must disconnect the power cord and wait approximately 30 seconds for the power to drain to avoid damage to the internal components. 3. Place the fingerprint reader (1) on the riser (2), and then attach the mounting bracket (3) and cable routing clip (4) to the fingerprint reader and riser with the two long screws (5) that are included with the fingerprint reader. 4. Connect the USB cable to the fingerprint reader (1) and route the cable under the routing clip on the fingerprint reader (2). Remove the mounting screw (3) from the underside of the I/O connectivity base, 24 Chapter 3 Hardware setup