I just upgraded with these cards older notebooks. Plugging, installed drivers, works immediately (WinXP). In Fast Ethernet Adapter achieve data rates of net 80Mbit / s, Gigabit LAN net 250Mbit / s. Since the notebooks are powered stationary and does not move, the not quite as tight fit in the card slot is not relevant to me. The data transfer was measured with NetSpeedMonitor. Conclusion: 5 stars