Board Size Options

single high adapter 
Single High Adapter

The board on the left is called a SINGLE HIGH ADAPTER because it has only one 'right angle header' on the board. This "Single" connector mates to one receptacle on the Cirris tester. On a typical Cirris tester you could expect to install (4) of these adapters.

 double high adapter
Double High Adapter

The board on the left is called a DOUBLE HIGH ADAPTER because it has two right angle header connectors on the board. This "DOUBLE" adapter mates to two receptacles on the Cirris tester. On a typical tester (without expansion boxes) you could expect to install (2) of this size adapter.

 quad high adapter
Quad High Adapter

The board on the left is called (you guessed it!) a QUAD HIGH ADAPTER because it has four right angle connectors on the board. This "QUAD" adapter mates to four receptacles on the Cirris tester. On a typical tester you could expect to install (1) of this size adapter.