Linksys EtherFast® Cable/DSL Router with 4-Port Switch. Switching protocols: Ethernet, Data link protocols: Ethernet, Management protocols: RMON. Firewall security: Port Filteringing,MAC Address Filtering,and DMZ Hosting. Operating temperature range (T-T): 0 - 40 °C, Operating relative humidity range: 10 - 85 %. Compatible operating systems: Windows 98SE/Me/2000/XP. Power requirements: AC 100/240 V ± 10% ( 50/60 Hz ), Management level: Web-based, Maximum data transfer rate: 0.1 Gbit/s