I ordered 20 sample RAK4260 parts - 10 for the EU868 band and 1 for the US915 band. Don’t ask how, but they have become mixed up and I no longer know which parts are for which frequency.
However, there are no markings on the parts to suggest that they are different and the part number is the same. Does this matter at all or are the two parts identical? Is there any way I can tell from the part (either by the DevEUI, by visual inspection, by measuring with a multimeter or by powering up and running code) which band the part is for (or, again, does it actually matter)?