VMware allows installing the full version of ESXi for Free all you need is a Customer Connect profile.
The only limitation I have found is you are only allowed maximum of 8 vCPU’s per Virtual Mechine.
To download and get your license key for ESXi 8 (Once you get a license it never changes for ESXi 8.x you can alway use this link to find your license key).
The easiest way to determine if your network card is supported is to try the ISO image it only takes a few minutes to build and boot.
If your sever does not have a supported network adapter you will get this message when installing:
If you get this message you will need to use a USB network adapter (dongle) and build a custom
image using the “USB Network Native Driver for ESXi” Fling (VMKUSB-NIC-FLING).
One example of this is a mini PC that uses the RTL-8125 chip, which are most AMD Rayzen mini PC’s with the 2.5G network adapter.
Download the VMware vSphere Hypervisor (ESXi) Offline Bundle zip file.