MSI B450M-A PRO MAX II
Chipset
AMD B450
CPU
Supports AMD Ryzen™ 5000 Series, 5000 G-Series, 4000 G-Series, 3000 Series, 
Memory
2x DDR4, Maximum Memory Capacity 64GB
Onboard Graphics
1x HDMI™
Support HDMITM 2.0b with HDR port, maximum resolution of 4K 60Hz*
1x DVI
Support DVI-D, maximum resolution of 1920x1200 60Hz
*Available only on processors featuring integrated graphics. Graphics specifications may vary depending on the CPU installed.
Slot
1x PCI-E x16 slot
1x PCI-E x1 slot
PCI_E1 Gen PCIe 3.0 supports up to x16 (From CPU)
PCI_E2 Gen PCIe 2.0 supports up to x1 (From Chipset)
Audio
Realtek® ALC897 Codec
7.1-Channel High Definition Audio
Storage
1x M.2
M.2_1 Source (From CPU) supports up to PCIe 3.0 x4 / SATA mode, supports 2280/2260/2242 devices
4x SATA 6G
RAID
Supports RAID 0, RAID 1 and RAID 10 for SATA storage devices
USB
2x USB 2.0 (Rear)
4x USB 2.0 (Front)
4x USB 5Gbps Type A (Rear)
2x USB 5Gbps Type A (Front)
LAN
Realtek® 8125 2.5Gbps LAN controller
Internal IO
1x Power Connector(ATX_PWR)
1x Power Connector(CPU_PWR)
1x CPU Fan
1x System Fan
2x Front Panel (JFP)
1x Chassis Intrusion (JCI)
1x Front Audio (JAUD)
1x Com Port (JCOM)
1x TPM pin header(Support TPM 2.0)
4x USB 2.0 ports
2x USB 5Gbps Type A ports