Season 1 is Soul of a New Machine-ish, but about personal computing, not minicomputers, and is set in Texas.
Season 2 is roughly about BBSs and Compuserve, and still in Texas.
Season 3 is about the early commercial Internet, same characters, SFBA.
Season 4 is about the Yahoo era of the Internet and about venture capital, also SFBA.
Season 1 feels like its connecting back to Compaq, which made a competitor to IBM's PC platform. Founded by previous TI employees, reverse engineered IBM's BIOS, etc.
The problem with it is that it is ahistorical enough in the tech that some things just don't work. The show tackles stuff about like a decade before it was actually relevant in market, and that has subtle problems that give the business stuff an uncanny-valley feel. Still a fun drama though.