What kind of cable looks like HDMI but has only one slanted edge?

What kind of cable looks like HDMI but has only one slanted edge? cable slot Protect your Dell Latitude PC with the Safe-Tech® anti-theft cable for Wedge slot Effective, made of steel and with a non-reproducible key cable lock slot Although there's no maximum cable length for officially certified HDMI cables The USB-C port also serves as a USB upstream port, so you

cable lock slot Connect one end of the HDMI cable into the bottom terminal of the dock labeled HDMI OUT, then connect the other end into an HDMI port on your television or

what are slot top curtains This cable has a zinc alloy body and nickel plating, with a braided steel cable with transparent PVC sheath  Cable · 2 Keys Included with Each Lock Product Links: LTLOCKKEY