reader. Worked immediately. Wired network: Ethernet Realtek RTL8102E/8103E. Worked immediately (tested only at 100 Mb/s). Wireless: Wifi Atheros AR5007. Worked immediately, but with a non-free driver . It stopped working after a while. The hardware button (blue when On, orange when off) seems to be unreliable on Compaqs. Sound: Intel 82801I