Here’s a practical question: so “Slashes” the connectivity board gangs 2-4 units together with the promise of future connectivity, but say one gets the 3-pack and wants the option of future Teletype connectivity, would one actually order a four terminal Slashes unit (since the option is given) and DIY throwing a ‘male’ header on the 4th? 
edit: or would it even matter with a Teletype outfitted with its distro busboard and skipping Slashes: would the only big loss be not ganging the W/ power? 
