Asus ZenBook Flip S review: Ports and biometric authentication The ZenBook Flip S has a better port selection than many notebooks in the same category. On the left, you will find an HDMI connection, two USB-C ports with support for Thunderbolt 4. On the right-hand side, there is a single USB-A port and power button. Unfortunately, the notebook lacks a 3.55mm headphone jack, though you get a USB-C dongle with a 3.5mm port in the box. The notebook does not have a physical fingerprint scanner; instead, the webcam comes with Windows Hello facial recognition. That means you will no longer need to type a long password or PIN to unlock the laptop. I found Windows Hello facial recognition authentication method mostly reliable. It had no issues giving me access to the notebook, even without my glasses on. Disappointingly, though, the 720p web camera is average. Now that everyone is working from home and video calling is the default medium to communicate with clients and colleagues, a laptop as expensive as the ZenBook Flip S should have come with a 1080p webcam.