3com OfficeConnect Wireless 54 Mbps 11g Firewall Router. Bandwidth: 2.4 GHz. DSL connection type: ADSL. Networking standards: IEEE 802.11g, 802.11b, Number of users: 253 user(s). Routing protocols: OFDM, CCK, Data link protocols: NAT/PAT (vs TCP & UDP), CHAP, IPCP, SNTP, Management protocols: CSMA/CA. Safety: EN 60950, IEC 60950, Certification: EN 55022 Class B, EN 55024