The GIGABYTE GA-G31M-ES ATX LGA 775 Intel DDR2 Motherboard is a working and reliable motherboard for Intel-based computers. It features multiple expansion slots, including PCI Express x1, PCI, and PCI Express x16, as well as various input/output ports such as VGA, USB, DVI, and Ethernet. With on-board audio support, this motherboard also has DDR2 memory slots compatible with DDR2 SDRAM memory modules. The ATX form factor allows for easy installation in most desktop computer cases, making it a practical choice for upgrading or repairing a system.working, tested,