MSI MEG Z790 ACE User Manual

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Debug Code LED
The Debug Code LED displays progress and error codes during and after POST. Refer
to the Debug Code LED table for details.
Boot Phases
Security (SEC) – initial low-level initialization
Pre-EFI Initialization (PEI) – memory initialization
Driver Execution Environment (DXE) – main hardware initialization
Boot Device Selection (BDS) – system setup, pre-OS user interface & selecting a
bootable device (CD/DVD, HDD, USB, Network, Shell, …)
Debug Code LED Table
SEC Progress Codes
01 Power on. Reset type detection (soft/hard)
02 AP initialization before microcode loading
03 System Agent initialization before microcode loading
04 PCH initialization before microcode loading
06 Microcode loading
07 AP initialization after microcode loading
08 System Agent initialization after microcode loading
09 PCH initialization after microcode loading
0B Cache initialization
Hexadecimal Character Table
Hexadecimal 0 1 2 3 4 5 6 7
LED display
Hexadecimal 8 9 A B C D E F
LED display

MSI MEG Z790 ACE Specifications

General

Processor manufacturer	Intel
Compatible processor series	Intel Celeron, Intel Pentium Gold
Supported processor sockets	LGA 1700
Non-ECC	Yes
Memory channels	Dual-channel
Number of memory slots	4
Supported memory types	DDR5-SDRAM
Maximum internal memory	128 GB
Supported memory clock speeds	4800, 5000, 5200, 5400, 5600, 6000, 6200, 6400, 6600, 6800, 7000, 7200, 7400, 7600, 7800 MHz
Wi-Fi standards	802.11a, 802.11b, 802.11g, Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac), Wi-Fi 6 (802.11ax)
Bluetooth version	5.3
Top Wi-Fi standard	Wi-Fi 6 (802.11ax)
Ethernet interface type	2.5 Gigabit Ethernet
Number of SATA III connectors	6
USB 3.2 Gen 2 (3.1 Gen 2) connectors	2
DisplayPort version	1.4
USB 2.0 ports quantity	0
Ethernet LAN (RJ-45) ports	1
USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity	7
RAID levels	0, 5, 10
Internal storage capacity	10 GB
Supported storage drive types	HDD & SSD
Supported storage drive interfaces	M.2, PCI Express
Cables included	SATA
BIOS type	UEFI AMI
BIOS memory size	256 Mbit
Parallel processing technology support	Not supported
Component for	PC
Motherboard chipset	Intel Z790
Audio output channels	7.1 channels
Motherboard form factor	Extended ATX
Windows operating systems supported	Windows 10 x64, Windows 11 x64

Weight and Dimensions

Depth	277 mm
Width	304.8 mm