EasyAVR v7 is all about connectivity. It has four different connectors for each port, so you have four different ways to add accessory boards, sensors and your custom electronics. The board supports both 3.3V and 5V microcontrollers, and has an on-board AVR In-Circuit Programmer as well as a JTAG header in case you want to use an external debugger.
Every component of the board is identified with a silkscreen on both the top and bottom of the board. These marks describe connections to the microcontroller, operation modes, and additional information.
This board includes an ATmega32 microcontroller in a 40-pin socket, but it features sockets for most other DIL-packaged AVR MCUs. This includes an 8-pin socket, a 14-pin socket, two 20-pin sockets, a 28-pin socket, and two 40-pin sockets. Never plug in more than one chip at a time! The two 20-, and 40-pin sockets are there to support the different pinouts Atmel uses in those packages. Be sure to plug your chip into the correct socket, and check the user manual for jumper settings required for certain MCUs.