USB shield – usb host shield
if you will not use External Power please be sure this jumpers are soldered as below :

so after soldering it will be like this image

Medium Kit for Arduino Projects
1 × 229 SAR
Arduino Prototype Shield with Mini Breadboard
1 × 35 SAR
Joystick Shield for Arduino Robotics Control
1 × 46 SAR
UNO Board SMD for Arduino UNO R3 projects
1 × 45 SAR
MEGA Board for Arduino Mega 2560 Projects
1 × 135 SAR Subtotal: 490 SAR
Medium Kit for Arduino Projects
1 × 229 SAR
Arduino Prototype Shield with Mini Breadboard
1 × 35 SAR
Joystick Shield for Arduino Robotics Control
1 × 46 SAR
UNO Board SMD for Arduino UNO R3 projects
1 × 45 SAR
MEGA Board for Arduino Mega 2560 Projects
1 × 135 SAR Subtotal: 490 SAR
if you will not use External Power please be sure this jumpers are soldered as below :

so after soldering it will be like this image

All Electronics Components
All Electronics Components
All Electronics Components
All Electronics Components
All Electronics Components
All Electronics Components
All Electronics Components
All Electronics Components