Motherboard Layout - ASROCK B550M Steel Legend User Manual

1.3 Motherboard Layout

CLRC
BTN1
USB 2.0
T: USB1
B: USB2
USB 3.2 Gen2
T: USB31_TA_1
B: USB31_TC_1
USB 3.2 Gen1
T: USB3_1
B: USB3_2
USB 3.2 Gen1
T: USB3_3
B: USB3_4
31
LAN
RoHS
AUDIO
CODEC
HD_AUDIO1
RGB_LED2
1
30 29
1 2
ATX12V2
ATX12V1
CHA_FAN1/WP
PCIE1
PCIE2
NUT1
PCIE3
CLRCMOS1
CHA_FAN3
1
/WP
ADDR_LED2
1
27
28 26
3 4
CPU_FAN2/WP
CPU_FAN1
SPI_TPM_J1
1
Promontory
CMOS
Battery
CHA_FAN2
USB_5_6 USB_3_4 CHA_FAN4/WP
/WP
1 1
24
25 23 22 21 20
B550M Steel Legend
5 6
RGB_LED1
1
1
ADDR_LED1
1
AMD
B550
PANEL1
SPK_PLED1
F_USB3_3_4 PLED PWRBTN
1
1 HDLED RESET
1
17
19 18
7
8
9
10
11
12
13
14
15
16
7