MSI mainboard maintains the commitment to product stability and reliability by introducing Military Class III components including SFC and Solid CAP which have passed MIL-STD-810G certification, making MSI"s Military Class III components synonymous with premium quality and ultimate stability. Active Phase Switching, APS, technology is an intelligent design that helps to save energy on MSI"s mainboard. The underlying idea is to switch off the power supply as soon as no electricity is needed, and when the system needs more resources again, APS will automatically adjust electricity supply accordingly. APS will automatically detect your processor"s loading at any given time and save energy accordingly. This is only possible by means of a very advanced power controlling technology. Other than software-based solutions, APS technology stands out from MSI"s own research. The specially developed IC chip can operate automatically depending on the demands of the power supply, which is to reduce the total power usage. Product Description: MSI Z77A-G45 - motherboard - ATX - LGA1155 Socket - Z77 Product Type: Motherboard - ATX Chipset Type: Intel Z77 Express Processor Socket: 1 x LGA1155 Socket Compatible Processors: Celeron, Core i5, Core i3, Core i7, Pentium G600 series, Pentium G800 series Max Supported Memory: 32 GB RAM Supported: 4 DIMM slots - DDR3 SDRAM Storage Ports: 2 x SATA-600 (RAID), 4 x SATA-300 (RAID) USB / FireWire Ports: 2 x SuperSpeed USB + 4 x Hi-Speed USB + (2 x SuperSpeed USB + 6 x Hi-Speed USB via headers) Audio: HD Audio (8-channel) LAN: Gigabit Ethernet General Product Type: Motherboard - ATX Chipset Type: Intel Z77 Express Processor Socket: LGA1155 Socket Max Processors Qty