ASROCK B550 STEEL LEGEND User Manual page 17

** 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. 8)
2
4
6
8
*** Ultra USB Power is supported on USB_34 ports. ACPI wake-up function is not supported on USB_34 ports.
Rear Speaker
(No. 6)
V --
V V
V V
V V
Central / Bass Line In
(No. 5) (No. 7)
--
--
V
V
B550 Steel Legend
--
--
--
V
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