ASROCK Z690 Phantom Gaming-ITX/TB4 Manual page 9

** If you use a 2-channel speaker, please connect the speaker's plug into "Front Speaker Jack". See the table below
for connection details in accordance with the type of speaker you use.
Audio Output Front Speaker
Channels (No. 7)
2
4
6
8
Rear Speaker
(No. 5)
V --
V V
V V
V V
Z690 Phantom Gaming-ITX/TB4
Central / Bass Line In
(No. 4) (No. 6)
--
--
V
V
--
--
--
V
5