untested. buyer acknowledges seller makes no claims that this motherboard is or isnt in working order being sold as is. but to the untrained eye(me) everything looks to be in order ready to accept your processor chip set and work for you?The ASUS PRIME Z390-A ATX Intel LGA1151 DDR4 4-Slot Motherboard is designed for high-performance computing, suitable for casual use as well as gaming. With a LGA 1151 socket type, it supports Intel CPUs and offers 4 memory slots for DDR4 SDRAM. The motherboard features various input/output ports such as PS/2, Ethernet, USB 3.0, USB 2.0, and USB-C, along with expansion slots for M.2, PCI Express x1, and PCI Express x16 devices. ASUS's reputation for quality and reliability is showcased in this motherboard, which also includes on-board audio for enhanced functionality.