M4800 GPU Upgrade

Hello.
I have a M4800 with Quadro K2100m and i want to upgrade it. I need to find Type A (3.0) GPU to install. sadly in my country I cant find one. Instead there is a lot of Type B and its bigger and maybe wont install. i found some people who tried T2000 T1000 P1000 P2000 M2200M but all of this are not sold in my country. I found M3000M and M4000M and M5000M Which are Type B
I searched for eGPU but my laptop has Express Card (the bandwidth is 2.5) and if I install a RX 580 GPU i cant use all the power.
Any suggestions?
Thanks