The new GX-D1081 Switch embedded Green Network Technology allows the user to conserve energy & still enjoys a lag free network. There is also with one VIP port or top priority port that contains the highest priority queue occupancy that ensures 80% data is transferred to there first. Asus SOHO Gigabit switch, is the best solution for high-Speed, Power-Reducing, benefiting Home/SOHO networking 8*10/100/1000 Base-T Gigabit Ethernet ports LAN 1, VIP port :high performance priority port for data connections IEEE 802.3x Flow Control for Full Duplex mode Back Pressure for Half Duplex mode Supports Full/ Half Duplex in 10M & 100M mode Supports Full Duplex in 1000M mode Supports full wire speed reception & transmission Supports Store-&-forward operation Supports Support Asus Green Network Feature: Link down detection, Cable length detection Supports 4K MAC Addresses Table Supports 104KB Packet Buffer Memory Supports up to 16KB Jumbo Frames Supports Auto-detection for MDI/MD-X