![Multiple Digital Expansion Boards](https://d27wgn5g4t3wja.cloudfront.net/img/b210efe0-48dd-4ebf-b113-97b44b97114d/77062.png)
Multiple Digital Expansion Boards
MSXB 038 - Microstar Laboratories, Inc. (Microstar Laboratories)
Multiple Digital Expansion Boards can be connected to a single DAP for a total of 128 digital input lines and 1024 digital output lines. Input expansion is at a maximum with eight MSXB 038 boards (128 points). Output can be expanded to 1024 points by connecting 64 MSXB 038 boards to a single DAP.