I have the same problem. Installing Esxi 5.5 works just fine. It even recognize my Realtek NIC (builtin NIC in motherboard), but when I try to update to 5.5 u1 or u2 it just says "No Network Adapters". I've got a friend with a different setup but with the same NIC (Intel i350-T4) and it works just fine for him. I keep wondering if Vmware has done something in the last few months with the U2 installation?

I have tried to customize the iso with drivers exactly like you Christian with the same driver versions.

I'm using the following motherboard:

Asus M5A99FX Pro R2.0

**Update:**

I have tried with different asyncs drivers now for 5.5 u2 but the same result. "No Network Adapters" during installation/update.

Message was edited by: HenkeJ