Just an FYI: These newer models of the Acer Aspire S7 (See tags for additional specific models) do not have kensington lock slots. Some documentation mentioned that they do, but they do not. There is a small slot that looks to be a strap slot on the right side, but a lock cannot be installed into it.
An alternative is to use a security slot adapter that’s glue-on like this:
This isn’t ideal as many people don’t want to ruin the aesthetics of their machines.
If anyone knows of an alternative lock that might work for the “strap slot” or some other way of securing it without attaching the unsightly adapter, feel free to comment.