The DES-1024D is truly Plug-&-Play with features like: Auto Speed Sensing — allowing it to automatically sense whether a network device is running at 10Mbps or 100Mbps then automatically adjusting itself for optimal performance; Auto-Negotiation (Full or Half Duplex) — negotiating and running the highest supported transmission rate whether at Half- or Full-Duplex; and Auto MDI/MDIX Crossover—offering auto-negotiating MDI/MDIX detection on every port to eliminate the need for crossover cables or uplink ports.