No, this is not an OOPArt (out of place artifact), despite what Fortean Times #338 (March 2016) seems to be suggesting on p7. I reject the notion that the 1st or 2nd Century BC relief depicts a laptop computer, complete with USB ports.
As per the upcoming Phantacea Mythos mini-novel entitled “Decimation Damnation”, it may be an example of Stone Gnome Art circa 5980 YD (our 1980). As such, it could be depicting Klannit Thanatos (the Mirror Mentalist, from both “Goddess Gambit” and “Helios on the Moon”) psychically communicating with Cyborg Cerebrus, he in his mirror-lined coffin.
The apparent girl holding the device could well be yellow-skinned Sedunihas, the Thanatoids youngest, who only ages one year in five, cross-dressing.