Technical Specifications:
Format: ATX (30.5 cm x 23.4 cm)
CPU: AMD AM4 Socket AMD Ryzen™ 2nd Generation/Ryzen™ with Radeon™ Vega Graphics/Ryzen™ 1st Generation Processors Supports CPU up to 8 cores
Chipset: AMD B450
Operating memory: 4 x DIMM, Max. 64GB, DDR4 3200(OC)/3000(OC)/2800(OC)/2666/2400/2133 MHz
LAN: Realtek® RTL8111H, ASUS LAN Guard
Audio: Realtek® ALC887-VD2 8-Channel High Definition Audio CODEC
Storage space:
AMD Ryzen™ 2nd Generation/ Ryzen™ with Radeon™ Vega Graphics/ Ryzen™ 1st Generation Processors:
-1 x M.2 Socket 3, with M key, type 2242/2260/2280/22110 storage devices support (SATA & PCIE 3.0 x 4 mode)
-2 x SATA 6Gb/s port(s)
AMD B450 chipset:
-4 x SATA 6Gb/s port(s)
Support Raid 0, 1, 10
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Expansion Slots:
AMD Ryzen™ 2nd Generation/ Ryzen™ 1st Generation Processors
-1 x PCIe 3.0/2.0 x16 (x16 mode)
AMD Ryzen™ with Radeon™ Vega Graphics Processor
-1 x PCIe 3.0/2.0 x16 (x8 mode)
AMD B450 chipset
-1 x PCIe 2.0 x16 (max at x4 mode)
-3 x PCIe 2.0 x1
External ports:
-1 x PS/2 keyboard/mouse combo port(s)
-1 x DVI-D
-1 x HDMI
-1 x LAN (RJ45) port(s)
-1 x 5Gb/s USB Type-CTM port(s).
-2 x USB 3.1 Gen 2 (teal blue) Type-A,
-2 x USB 3.1 Gen 1 (blue) Type-A,
-2 x USB 2.0
-3 x Audio jack(s)
Internal ports:
-1 x Aura RGB Strip Header
-1 x USB 3.1 Gen 1(up to 5Gbps) connector(s) support(s) additional 2 USB 3.1 Gen 1 port(s) (19-pin)
-2 x USB 2.0 connector(s) support(s) additional 4 USB 2.0 port(s)
-1 x M.2 Socket 3 with M key, type 2242/2260/2280/22110 storage devices support (SATA & PCIE 3.0 x 4 mode)
-6 x SATA 6Gb/s connector(s)
-1 x CPU Fan connector(s) (1 x 4-pin)
-3 x Chassis Fan connector(s) (3 x 4-pin)
-1 x AIO_PUMP connector (1 x 4-pin)
-1 x 24-pin EATX Power connector(s)
-1 x 8-pin ATX 12V Power connector(s)
-1 x Front panel audio connector(s) (AAFP)
-1 x System panel(s)
-1 x Clear CMOS jumper(s)
-1 x COM port header
Accessories:
- User manual
-I/O Shield
-2 x SATA 6Gb/s cable(s)
-1 x M.2 Screw Package
-1 x Supporting DVD
Bios: 128 Mb Flash ROM, UEFI AMI BIOS, PnP, SM BIOS 3.1, ACPI 6.1, Multi-language BIOS, ASUS EZ Flash 3, ....
More at https://www.asus.com/Motherboards/PRIME-B450-PLUS/specifications/
https://www.asus.com/microsite/motherboard/ASUS-motherboards-Win11-ready/
https://www.asus.com/support/FAQ/1046215