How to find the correct model

today i got a ZEN 2 laser

it is hang on asus logo and
also fail with update via sd card

so that i need to flash via usb

for flash with flashtool i need file

but how i know the model

i think there is two models

ze550kl ze500kl

which one is mine

Asus Zenfone 2 Laser ZE550KL vs. Asus Zenfone 2 Laser ZE500KL –