Factory Pro cable allows you to put your Moto phone into Fastboot mode;

Factory Pro cable has been specially designed to put Motorola phone into Fastboot mode.

Factory Pro Cable for Motorola - Features:
Put a phone into Fastboot mode.
Flash a phone with RSD even with a low battery.
Allows you to put a phone into Fastboot mode even if volume buttons have been damaged
For some Moto devices a battery is not required at all.