I've just recently purchased the PPBA and was wondering exactly the same thing. I was searching for solutions and came up with these two:

www.amazon.co.uk/dp/B07ML3VFXV/ref=cm_sw...9W9PHN0X2N5S0RWTHGTP

www.amazon.co.uk/dp/B08R2W3SSV/ref=cm_sw...A6A8QFTJRD2ZF5Y294AW

Not sure but these might work with the adjustable power output socket which can be set to 5V

Read More...