Voltage regulator modules (VRMs) are among the most essential motherboard components. A good VRM intelligently delivers CPU power based on actual needs at any given time. ASUS was first with digital power design featuring faster sensing & response to deliver precise CPU power on dem&. This great accuracy reduces energy waste & of course improves system stability thanks to more consistent delivery. ASUS motherboard back I/O panels are made from strong & corrosion-resistant stainless steel, which is bonded with a thin layer of chromium oxide to enhance anti-corrosive properties. Passing 72-hour spray salt endurance tests, ASUS stainless steel back I/O panels have a lifespan that's three times (3x) longer compared to ordinary panels.