Problem connecting Pro Mini (328/5V) with USB2Serial light (mac)

Hi there!

I've got two Pro Minis, both of them 5V with ATmega328 chips. When I connect them to my Mac's USB port with USB3Serial light the other one blinks a couple of times and then stays quiet and the other just keeps blinking. Neither one of them show up on the computer as an usb port. I've tried connecting them straight and through breadboard (with USB2Serial light). Earlier I've also tried programmin them through Arduino Uno and also with USBtinyISP, but nothing seems to work.

What am I doing wrong?

– noob

Pictures of the connections: (with Uno) (USBtinyISP) (through breadbord with USB2Serial light) (straight with USB2Serial light)