The item the woman is opening is actually a shadow box used in funerary by ancient Greeks.
Apparently, the statue is depicting a deceased woman reaching for the shadow box held by her attendant. This "has a long history in Greek funerary art," according to the Getty Collection.
It's unclear if the attendant represents a young family member in mourning or a servant or enslaved person. But the Getty Collection notes that the deceased woman came from a wealthy family.
As for the USB-like holes:
"The two holes apparent on its base are evidence of an ancient repair, perhaps in the form of two metal pins intended to hold a now lost marble component in place. The thinness of the box indicates that, like many works of ancient art, this relief was not intended as a photographic depiction of reality, but to convey the wealth and status of the deceased."
\u201c@holland_tom But nothing beats the Ancient Greek statue of a woman opening her laptop.\u201d