Apparatus and methods for connecting a device to an integrated circuit. The apparatus includes an insulating substrate that has two major sides and a number of sites for housing components. Each site has a first node on one of the two sides of the insulating substrate and a second node on the other of the two sides of the insulating substrate. Each site also has components that are aligned normal to the sides of the insulating substrate and are connected to the nodes at the site. Such apparatus are useful as adapters for testing an integrated circuit, such as connecting a test device to the integrated circuit with the adapter and observing and/or driving signals through the adapter.