This product is customized for use in the UK & Irel&. What it does? The DES-1005D 5-port Desktop Switch means that you can easily connect any Ethernet-enabled device, thus extending your home network. No configuration is required, making this switch completely plug-&-play. Each of the 5 intelligent ports detects the network speed & auto-negotiate between 100BASE-TX & 10BASE-T, as well as between full- & half-duplex. Each supports auto-negotiation of MDI/MDIX cross over, eliminating the need for cross-over cables or uplink ports.