From the Manufacturer
https://www.msi.com/Motherboard/A320M-GRENADE.html#productFeature-section
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Mfr Part Number: A320M GRENADE
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CPU: Socket AM4
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Supports AMD Ryzen and 7th Gen A-series/ Athlon Processors
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Chipset: AMD A320
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Memory: 2x DDR4-3200(OC)/ 2933(OC)/ 2667/ 2400/ 2133/ 1866 MHz DIMM Slots, Dual Channel, ECC, non-ECC, max capacity of 32GB
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Slots: 1x PCI-Express 3.0 x16 Slot, 2x PCI-Express 2.0 x1 Slots
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Storage:
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SATA: 4x SATA3 Ports, Support RAID 0, 1, 10
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M.2: 1x M.2 Port (Key M), Supports PCI-Express 3.0 x4 (RYZEN Series Processors) or PCI-Express 3.0 x2 (7th Gen A-series/ Athlon processors) and SATA 6Gb/s 2242/ 2260 /2280 storage devices
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Audio: Realtek ALC892 7.1-Channel High Definition Audio
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LAN: Realtek 8111H Gigabit Ethernet Controller
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Ports: 6x USB 3.1 Gen1 Ports (4 Type A rear, 2 via header), 6x USB 2.0 Ports (2 Type A rear, 4 via headers), 1x PS/2 Keyboard/Mouse Combo Port, 1x VGA Port, 1x DVI-D port, 1x HDMI Port, 1x RJ45 LAN Port, Audio I/O Jacks
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Power Connector: 1x 24-pin ATX Main Power Connector, 1x 8-pin ATX 12V Power Connector
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Form Factor: MicroATX, 9.6 x 8.3 inch / 24.4 x 21.0 cm