AN-12077 Datasheet, PDF (36/48 Pages) ATMEL Corporation – Hardware Prerequisites

Connection would be as below.
5.4.3 Connection: USB cable
Connect the USB cable to the ATmega328P Xplained Mini board and place the board as shown below.
Make sure SD card is properly inserted in the socket.
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3 _{From Maker to Manufacture: Bridging the Gap from Arduino to AVR [TRAINING MANUAL]}
6 ^{Atmel-42439A-From-Maker-to-Manufacture-Bridging-the Gap-from-Arduino-to-AVR_TrainingManual_082015}