Add eight RS232 serial ports to any notebook or desktop computer using a single USB port The ICUSB2328 8 Port USB to Serial RS232 DB9 Adapter Hub lets you connect up to eight RS232 serial devices to your Mac or PC, laptop or desktop computer through a single USB port, as though the computer offered integrated DB9M serial connectors. The RS232 Serial Hub is compactly designed to preserve valuable workspace, and is bus-powered to eliminate the need for an external power adapter or wall outlet - a cost-effective solution that bridges the compatibility gap between modern USB-capable computers and legacy RS232 serial peripherals. Backed by a StarTech.com lifetime warranty and free lifetime technical support. The StarTech.com Advantage