ASROCK B550 PRO4 - Rear Panel Connector Overview

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3
B550M Pro4
I/O Panel
No. Description No. Description
1 D-Sub Port 9 USB 3.2 Gen2 Type-A Port
2 USB 2.0 Ports (USB_12)* (USB31_TA_1)
3 LAN RJ-45 Port** 10 USB 3.2 Gen2 Type-C Port
4 Line In (Light Blue)*** (USB31_TC_1)
5 Front Speaker (Lime)*** 11 PS/2 Mouse/Keyboard Port
6 Microphone (Pink)*** 12 DisplayPort 1.4
7 USB 3.2 Gen1 Ports (USB3_34) 13 HDMI Port
8 USB 3.2 Gen1 Ports (USB3_12) 14 Antenna Bracket
* Please note that the USB_2 consumes auxiliary power (+5VSB) while the other USB ports consume DUAL
Power (+5VDUAL). e USB_2 is optimal for connecting the USB Type speaker and headset.
** ere are two LEDs on each LAN port. Please refer to the table below for the LAN port LED indications.
Activity / Link LED Speed LED
Status Description Status Description
O No Link O 10Mbps connection
Blinking Data Activity Orange 100Mbps connection
On Link Green 1Gbps connection
ACT/LINK LED
SPEED LED
LAN Port
11
10
78913 12
1 2 3 5
14
6
4