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

NAND Gate 74LS00 IC 7400
1 × 10 SAR
Pro Mini Board for Arduino Projects-Atmega168 5v
1 × 69 SAR Subtotal: 79 SAR
NAND Gate 74LS00 IC 7400
1 × 10 SAR
Pro Mini Board for Arduino Projects-Atmega168 5v
1 × 69 SAR Subtotal: 79 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