What's the Difference between these two MBP 13.3"?

I bought an MBP a few weeks ago with the model number MC374LL/A , when my friend went to an i-store and inquired about the said model, they told there's no model like that and instead they have a MC374ZP/A.

everything about both laptop are the same, if I google both I think are legit model numbers. care to explain what's the difference? or is it just a code as to what market the unit is aimed for? apparently, units in Singapore also has the MC374ZP/A model number.

Thanks in advance...

No difference. The ZP model I believe is outside of the US while the LL is. There are at least fifteen models of each MacBook and MacBook Pro. Numbers also change when there's a refresh at the plant, even if there is no obvious change in hardware (sometimes there are minor changes).

MaxxuM wrote in post #10755768
No difference. The ZP model I believe is outside of the US while the LL is. There are at least fifteen models of each MacBook and MacBook Pro. Numbers also change when there's a refresh at the plant, even if there is no obvious change in hardware (sometimes there are minor changes).

ok thank you... so LL is indeed for the US