How Long Does LEGO® Control Lab Serial Interface & Adapter (9751) Take to Build?

A typical builder finishes LEGO® Control Lab Serial Interface & Adapter (set 9751, 2 pieces) in about 5 minutes.

PieceTick estimates build time from piece count, part complexity, the set’s age rating, your experience level, and how you sort pieces. Adjust those on this page for an estimate matched to how you build.