Asus ROG Strix B550-A Gaming AM4 ATX Motherboard - Manual (Page 12)

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Installation tools and components
Phillips (cross) screwdriver
PC chassis Power supply unit
AMD AM4 CPU AMD AM4/AM3 compatible CPU Fan
DDR4 DIMM SATA hard disk drive
SATA optical disc drive (optional) Graphics card (optional)
M.2 SSD module (optional) 1 Bag of screws
The tools and components in the table above are not included in the motherboard
package.