D-Link offers a range of Fast Ethernet converters that can be used to adapt different cabling within a network to create a homogeneous unit. If networks with their different topologies are linked together with the help of a converter, they can communicate with each other, exchange data and share mostly expensive peripheral devices. The respective converter can be selected... depending on the circumstances. This is a particularly cost-effective way to continue using previously used devices such as switches. Expensive new purchases can thus be avoided and the network can remain in its basic structure. D-Link also offers a wide range of products in terms of fibre optic cable length. Fibre optic lines are highly suitable for such internal LAN connections, as they combine interference-free transport with high eavesdropping security.