Because it is past its lifecycle, ESXi 5.5 does not receive security patches , bug fixes, or maintenance updates. It is highly vulnerable to modern exploits and should only be used in isolated, non-production labs. Key Installation Steps
Use a tool like Rufus or Etcher to burn the ISO to a USB flash drive or CD.
Install VMware ESXi & Create Your First VM: Step-by-Step - StarWind vmware esxi 5.5 iso download
ESXi 5.5 was designed for older hardware. Check the VMware Compatibility Guide to ensure your CPU and NIC are supported.
Once you have secured the ISO, the installation process generally follows these steps: Because it is past its lifecycle, ESXi 5
If you are planning to deploy ESXi 5.5 today, you must be aware of its support status: September 19, 2018. End of Technical Guidance: September 19, 2020.
After installation, use the Direct Console User Interface (DCUI) to set a static IP address and hostname. Should You Still Use ESXi 5.5? Install VMware ESXi & Create Your First VM:
Some developers keep lists of direct download links on platforms like GitHub Gists , though you should always verify the file's MD5/SHA checksum before installation. Critical End-of-Life Information