The 5X Protection II employs fine components, excellent circuit design, & exacting standards to guarantee quality & long-term durability of your motherboard with all-round protection. ASUS LANGuard is hardware-level networking protection that employs signal-coupling technology & premium anti-EMI surface-mounted capacitors ensuring a more reliable connection & better throughput, plus electrostatically-guarded & surge-protected components for greater tolerance to static electricity & enhanced protection against surges.