The easiest check is to go to Settings > Accounts > Sign-in options. Under "Ways to sign in" > "Facial recognition (Windows Hello)" you can see if the option is available ("Sign in with your face") or not ("This option is currently unavailable"). The facial sign-in is enabled by a camera with an infrared sensor. Such a sensor would appear in Device Manager as an IR camera in addition to your standard webcam. The Setup and Specifications Guide for the 5500 lists the IR camera as an option, so presumably some units have it and some don't.
Dear friends,   I need your help to identify if I can use Windows Hello face feature on my laptop. I am attaching my computer details below.   Device name DellLatitude5500Processor Intel(R) Core(TM) i7-8665U CPU @ 1.90GHz 2.11 GHzInstalled RAM 16.0 GB (15.8 GB usable)Device ID Product ID System type 64-bit operating system, x64-based processorPen and touch No pen or touch input is available for this display   Edition Windows 11 ProVersion 22H2Installed on ‎9/‎23/‎2022OS build 22621.900Experience Windows Feature Experience Pack 1000.22638.1000.0     Thank you
How to check if my laptop supports Windows Hello Face feature?