No experience with these but this has the MSCAN switch.
http://www.totalcardiagnostics.com/s...rd-obd-scanner
When Forscan on PC starts it asks if the adapter has a switch.
My wired elm327 adapter has only HSCAN, my OBDLinkMX has both and is permanently plugged in, has low current standby,
I'd say it has this chip:
https://www.scantool.net/stn1170/