B550D4M
6
7
English
1.4 Motherboard Layout
24.4cm (9.6 in)
3
0
.5
c
m
(1
2
in
)
ATXPWR1
V
G
A
DDR4_A2 (64 bit, 288-pin module)
DDR4_A1 (64 bit, 288-pin module)
DDR4_B2 (64 bit, 288-pin module)
DDR4_B1 (64 bit, 288-pin moule)
U
S
B
3
.2
G
e
n
1
T
: U
S
B
3
_
2
B
: U
S
B
3
_
1
IP
M
I_
L
A
N
USB3_5_6
PCIE6
PCIE4
ASPEED
AST2500
B550D4M
Socket
AM4 PGA 1331
S
A
T
A
_
1
1
AUX_PANEL1
HDLED RESET
PLED PWRBTN
PANEL1
1
1
TPM1
BUZZER1
RoHS
2
3
1
6
9
10
12
14
15
16
17
18
24
13
29
31
7
8
FAN1
1
FRNT_VGA1
FAN2
ATX12V2
FAN5
FAN3
FAN6
FAN4
USB_1_2
1
USB3_7
1
SPEAKER1
COM2
1
Dr.
Debug
1
T 1
R
35
AMD
B550
BIOS
ROM
1
TPM_BIOS_PH1
1
20
21
28
U
S
B
3
.2
G
e
n
2
T
: U
S
B
3
_
4
B
: U
S
B
3
_
3
L
A
N
1
C
O
M
1
L
A
N
2
HDMI1
NUT110_2
M
2
_
2
SATA_5
SATA_6
23
1
IPMB1
BMC_SMB1
NUT80_2
NUT42_2
BMC
ROM
PSU_SMB1
UID1
4
19
22
26
27
30
ATX12V1
BATTERY
S
A
T
A
_
2
S
A
T
A
_
3
S
A
T
A
_
4
1
NCSI_SEL1
MEZZ_A1
UID1
UID_LED1
5
11
CLRCMOS1
25
33
32
36
34
