The VK224 4-Port Serial Expansion Box provides four additional bi-directional RS-232 / 422 / 485 serial ports for a flexible expansion of the ATEN™ Control System. This allows users to control additional serial devices in an environment where more serial devices are required. With the advantage of an Ethernet-based connection, the expansion box can be easily connected to the VK2100 Control Box via a LAN connection from a variety of locations across a network. ID Switch pairs the VK224 with a controller to instantly configure the network settings. Up to eight VK224 expansion boxes can be added to a single Control Box. Supports Power over Ethernet (PoE) or DC power supply.