# Expansion Hardware

Auto-detected expansion boards are automatically added to the InstaCal configuration when InstaCal is launched. The device properties are automatically adjusted to reflect the expansion properties. Auto-detected expansion boards are not shown as a separate device in the InstaCal device tree.

Manually configured expansion boards, such as the CIO-EXP series, are added to the InstaCal configuration by selecting the compatible board on the main InstaCal form, and selecting the Add Exp Board… option from the Install menu. Manually configured expansion boards are shown in the InstaCal device tree as a branch attached to the device to which it was added.