Lumia 950 standard phone with 2 slots for sims or dedicated?

[Windows Central Question]

Hi. I want a dual sim function for lumia 950 but i don't know if it comes from fabric with 2 slots for dual sim + 1 for sd card or there are different phone: single or dual sim

 

[Papek_SVK]

There are two versions Single Sim with 1 nano SIM slot + microSD and Dual Sim version which has 2 nano SIM slots + 1 slot for microSD card.