ACSP7 with Pixhawk 2.1?

Is there any reason not to use an mRobotics ACSP7 power module with a Pixhawk 2.1 instead of the kit power module? The voltage and current specs for the ACSP7 are sufficient for my needs. It’s rated for 2A on the 5V output. I’m not sure what the kit power module can source on the 5V port, is that also 2A? Thanks.