How many serial ports are configured for power by default on a standard (non-customized) HP
rp5700 POS System?

A.
Zero

B.
One

C.
Two

D.
Three

Explanation:

Reference:
http://h18000.www1.hp.com/products/quickspecs/12703_na/12703_na.PDF
(see page 17 and 18)