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Message: [QUOTE="Bighorn, post: 124693, member: 20035"] Most times a Modem can accommodate a single computer which is why a Router is necessary if using 2 or more computers to gain Internet access. The Router usually has 1 Uplink port to a separate Modem with 4 Ethernet ports for computers Or a combination Router/Modem is furnished or bought to get both features in one device, depends upon the ISP. Those in my area have either a monthly fee or a purchase option, or the subscriber can buy their own elsewhere. In conclusion, you can use a cross-over cable between the Ethernet/NIC port on two computers but will not have Internet access. A Switch may allow one computer 'talking' to another but checking with the manufacture will show that. A Modem has always been necessary to get Internet service or maybe a cellphone service will have such a feature. [/QUOTE]