Hi Ron,
ESXi 5.5 U3a (HP-customized) ISO is finally available at:
VMware vSphere 5: Private Cloud Computing, Server and Data Center Virtualization
| Version | 5.5.0 U3a |
|---|---|
| Description | HP Custom Image for ESXi 5.5.0 U3a GA Install CD |
| Documentation | |
| Release Date | 2015-11-17 |
Have fun!
Cop