orchestrator - when a create a virtual machine - flexible adapter is created - and failed

Hello World,

when a create a virtual machine - flexible adapter is created.

Network adapter flexible is created.

How May I choose a type of network adapter like e1000, e1000e, vxnet3, etc.

cause, my windows machine report an error This type of network adapter is not supported by {0}Microsoft Windows 7 (32-bit)

thanks