product description : cisco 851 integrated services routerwan interface : 10/100 mbps fast ethernetlan interfaces : 4 port 10/100 mbps switchmemory : 64 mb dram, 20 mb flash memoryconsole port : rj-45power supply : universal 100 to 240 vac, externaldimensions (h x w x d) : 50.8 x 260.4 x 215.9.9 mmweight : 0.954 kg* stateful inspection firewall and ipsec vpn support* hardware-accelerated triple data encryption standard (3des) for ipsec* hardware-accelerated advanced encryption standard (aes) for ipsec* ipsec 3des termination/initiation, ipsec pass-through, 5 vpn tunnels* point-to-point tunneling protocol (pptp) pass-through, l2tp pass-through* advanced application inspection and control, e-mail inspection engine* no service password recovery, http inspection engine* quality of service (qos) features like weighted fair queuing (wfq),policy-based routing (pbr), per-vc queuing, per-vc traffic shaping