ASUS PRIME B450-PLUS

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
RAM: 4 x DIMM, Max. 64GB, DDR4 3200 (OC)/3000 (OC)/2800 (OC)/2666/2400/2133 MHz
Lan: Realtek® RTL8111H, ASUS LAN Guard
Sound: Realtek® ALC887-VD2 8-Channel High Definition Audio CODEC
Graphics card: Depending on CPU

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 5Gbps 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