- Set ESXi package acceptance level to community:
esxcli software acceptance set --level=CommunitySupported
- Install the VIB:
cd /tmp
wget https://blog.rylander.io/2017/01/15/connect-a-esxi-6.5-host-to-a-ups-connected-to-a-synology-nas/NutClient-ESXi500-1.4.0.tar.gz
tar -xvzf NutClient-ESXi500-1.4.0.tar.gz