Can I connect the VCC(TRGT) of the 10-pin download cable header to a different power source which has the same voltage as the recommended power source?

Description

Whilst the Altera® device handbooks and download cable user guides say pin 4 of the 10-pin download cable header for VCC(TRGT) needs to be connected to recommended power sources such as VCCIO, VCCA, or VCCPD,  you can also connect this to a different power source with the same voltage as the recommended power source.