Asus AMD B550 Equipped AM4 Compatible Motherboard PRIME B550M-A [MicroATX]

We offer a wide variety of products, and the following precautions apply to some of them. Please note that they are listed for all products. 【Voltage Compatibility】Designed for Japanese voltage (90-110V). Using with a different voltage may cause malfunction. 【Plug Type】Japanese plugs (A or B type). Use a conversion adapter if needed. 【Transformers & Adapters】Transformers adjust voltage; adapters only change plug shape. Using an adapter without a transformer may damage the product. 【Liability】We are not responsible for damages caused by improper use, such as using the product without a transformer. [Chipset/Socket/Standard] AMD B550 / AM4 Socket/ MicroATX [OS] Windows 10 64-bit [CPU] AMD Socket AM4 for 3rd Gen AMD Ryzen Processors [Supported memory] Number of slots: 4 (maximum 128GB) 4400(O.C)/4266(O.C)/4133(O.C)/4000(O.C)/3866(O.C)/3600(O.C)/3466(O.C.)/3200/3000/2800/2666/2400/2133 MHz, Unbuffered Memory [Expansion slot] 1 x PCIe 4.0 x16 slot (supports x16 mode) [Storage] 4 x SATA 6Gb/s ports [Interface] 7x USB 3.2, 2 x USB 2.0, etc. [External dimensions] mATX Form Factor 9.6 inch x 9.6 inch (24.4 cm x 24.4 cm)