there’s no need to attach a monitor and keyb to your node.
All access is through web interface and in special cases (debug) through SSH
So go to your any other computer and open a browser and type:
umbrel.local or use the node IP
Please read these guides, we put them in the special section of this forum “guides” special for new users, to be read.
http://community.umbrel.com/t/getting-started-with-your-umbrel/3555/10
http://community.umbrel.com/t/umbrel-troubleshooting-guide/3632/2
http://community.umbrel.com/t/important-links-to-learn-more-about-bitcoin-lightning-network/3556/2