A historical tour of the best-selling member of the Tandy 1000 computer family -- the 1000SX -- and tips and tricks on RAM troubleshooting and upgrading it with a NEC V20 CPU chip, XT-CF Eco Lite compact flash card interface, 3½" floppy diskette drive, and Microsoft InPort bus mouse card.
Adrian Black's video on modifying Tandy floppy drive cables to work with a 3½" drive: https://www.youtube.com/watch?v=QX-89z2VCVQ