MSI MEG B550 UNIFY User Manual

Troubleshooting
Before sending the motherboard for RMA
repair, try to go over troubleshooting
guide first to see if your got similar
symptoms as mentioned below.
The power is not on.
∙ Connect the AC power cord to an
electrical outlet securely.
∙ Check if all ATX power connectors
like ATX_PWR1, CPU_PWR1 are
connected from the power supply to the
motherboard?
∙ Some power supply units have a power
button on the rear side, make sure the
button is turned on.
∙ Check if the power switch cable is
connected to JFP1 pin header properly.
∙ Verify the Clear CMOS jumper JBAT1 is
set to Keep DATA.
∙ Test with another known working
power supply of equal or greater
wattage.
The power is on, but no signal to
monitor
∙ Connect the monitor power cord to a
electrical outlet securely.
∙ Make sure the monitor is turned on.
∙ Select different inputs on the monitor.
∙ If 3 long beeps are heard, remove all
memory modules and try to install only
one memory module in the DIMMA2 slot
first and then restart the computer.
∙ If 1 long 2 short beeps are heard,
remove and reinstall the graphics card
and then restart the computer.
∙ Test with another known working
graphics card.
The computer does not boot after
updating the BIOS
∙ Clear the CMOS.
∙ Use the secondary BIOS to bootup the
system (Only for motherboard with Dual
BIOS)
Lost BIOS password
∙ Clear the CMOS, but that will cause
you to lose all customized settings in the
BIOS.
There is no audio
∙ Adjust the volume.
∙ Connect the speakers/headphones to
audio ports on the motherboard rear IO
panel.
∙ Remove secondary speakers/
headphones, HDMI cables, USB audio
devices.
∙ Test with another known working
speaker or headphone.
There is no network
∙ Make sure the network chipset driver
has been installed.
∙ Verify if the network cable is properly
connected and make sure the LAN port
LEDs are properly illuminated.
∙ Verify your TCP/IP settings.
∙ Restart or reset your router.
∙ Test with another known working LAN
cable.
The USB device is not working
∙ Make sure your USB drive driver has
been installed.
∙ Verify if USB device is listed in
Windows
®
Device Manager.
∙ Connect the USB device to other USB
port on the motherboard rear IO panel.
78
Troubleshooting

MSI MEG B550 UNIFY Specifications

General

Processor socket	Socket AM4
Processor manufacturer	AMD
Compatible processor series	AMD Ryzen 3, AMD Ryzen 5, AMD Ryzen 7, AMD Ryzen 9 3rd Gen
Maximum number of SMP processors	1
ECC	Yes
Memory channels	Dual-channel
Memory slots type	DIMM
Number of memory slots	4
Supported memory types	DDR4-SDRAM
Maximum internal memory	128 GB
Supported memory clock speeds	1866, 2133, 2400, 2667, 2800, 2933, 3000, 3066, 3200, 3466, 3600, 3733, 3866, 4000, 4133, 4266, 4400, 4533, 4600, 4733, 4866, 5000, 5100, 5600 MHz
RAID levels	0, 1, 10
Supported storage drive types	HDD & SSD
Number of storage drives supported	10
Supported storage drive interfaces	M.2, SATA
DirectX version	12.0
Maximum resolution	4096 x 2160 pixels
Maximum graphics card memory	16384 MB
Parallel processing technology support	2-Way CrossFireX
USB 2.0 connectors	2
Number of SATA II connectors	0
Number of SATA III connectors	6
USB 2.0 ports quantity	USB 2.0 ports have a data transmission speed of 480 Mbps, and are backwards compatible with USB 1.1 ports. You can connect all kinds of peripheral devices to them.
USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity	3
LAN controller	Realtek RTL8125B
Wi-Fi standards	802.11a, 802.11b, 802.11g, Wi-Fi 4 (802.11n), Wi-Fi 6 (802.11ax)
Bluetooth version	5.1
Top Wi-Fi standard	Wi-Fi 6 (802.11ax)
WLAN controller model	Intel Wi-Fi 6 AX200
Ethernet interface type	2.5 Gigabit Ethernet
Audio chip	Realtek ALC1220P
Component for	PC
Motherboard chipset	AMD B550
PC health monitoring	FAN, Temperature
Audio output channels	7.1 channels
Motherboard form factor	ATX
BIOS type	UEFI AMI
Cables included	SATA
Harmonized System (HS) code	84733020
Weight	1000 g

Weight and Dimensions

Depth	244 mm
Width	304 mm
Height	65 mm