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MSI PRO B660-A DDR4 User Manual

MSI PRO B660-A DDR4
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26
UEFI BIOS
MSI UEFI BIOS is compatible with UEFI (Unified Extensible Firmware Interface)
architecture. UEFI has many new functions and advantages that traditional BIOS
cannot achieve, and it will completely replace BIOS in the future. The MSI UEFI
BIOS uses UEFI as the default boot mode to take full advantage of the new chipset
capabilities.
Important
The term BIOS in this user guide refers to UEFI BIOS unless otherwise noted.
UEFI advantages
Fast booting - UEFI can directly boot the operating system and save the BIOS self-
test process. It can also eliminate the time to switch to CSM mode during POST.
Supports for hard drive partitions larger than 2 TB.
Supports more than 4 primary partitions with a GUID Partition Table (GPT).
Supports unlimited number of partitions.
Supports full capabilities of new devices - new devices may not provide backward
compatibility.
Supports secure startup - UEFI can check the validity of the operating system to
ensure that no malware tampers with the startup process.
Incompatible UEFI cases
32-bit Windows operating system - this motherboard supports only Windows 10/
Windows 11 64-bit operating system.
Older graphics card - the system will detect your graphics card. If you use older
graphics cards, it may display a warning message There is no GOP (Graphics Output
protocol) support detected in this graphics card.
Important
We recommend that you replace it with a graphics card supporting GOP/UEFI or use
CPU with integrated graphics for having normal function.
How to check the BIOS mode?
1. Power on your computer.
2. Press Delete key, when the Press DEL key to enter Setup Menu, F11 to enter Boot
Menu message appears on the screen during the boot process.
3. After entering the BIOS, you can check the BIOS Mode at the top of the screen.
BIOS Mode: UEFI

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MSI PRO B660-A DDR4 Specifications

General IconGeneral
Audio chipRealtek ALC897
Component forPC
Motherboard chipsetIntel B660
Audio output channels7.1 channels
Motherboard form factorATX
Motherboard chipset familyIntel
Processor socketLGA 1700
Compatible processor seriesIntel Celeron, Intel Pentium Gold
Non-ECCNo
Number of memory slots4
Supported memory typesDDR4-SDRAM
Maximum internal memory128 GB
Supported memory clock speeds2133, 2666, 3200, 3600, 4800 MHz
RAID levels0, 1, 5, 10
RAID supportYes
Supported storage drive typesSSD
Supported storage drive interfacesM.2, SATA III
Parallel processing technology supportCrossfire
USB 2.0 connectors1
USB 3.2 Gen 1 (3.1 Gen 1) connectors2
USB 3.2 Gen 2 (3.1 Gen 2) connectors0
BIOS typeUEFI AMI
HDMI version1.2
DisplayPort version1.4
USB 2.0 ports quantityUSB 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.
Ethernet interface type2.5 Gigabit Ethernet
Cables includedSATA
Harmonized System (HS) code84733020
Weight1000 g
Weight and Dimensions IconWeight and Dimensions
Depth244 mm
Width305 mm
Height73 mm

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