Question about wiring Up2Stream Pro + DAC + IR board

[Steve1]

Hi,
This has been discussed previously, the cable is correct.

Up2Stream Pro V4 + DAC expansion board viring diagram

Hi! A just bought Up2Stream Pro V4 and DAC expansion board for it. If using the cable from DAC board box for connection DAC to Up2Stream, pin marking “VC3.3V” in DAC board will be connect with pin marking “VCC_5V” in Up2StreamPro . Is it correct!? Why you cant explain viryng diagram in user manual in expansion board for connection to Up2Stream Pro/Mini? Thanks!