Delock Adapter USB 2.0 > 4 x Serial The USB 2.0 to serial adapter enables you to connect 4 serial devices to a free USB port of your PC or notebook. FTDI chipset 4 x RS-232 serial interface with DB9 connector Connector with screws Data transfer rate up to 115.2 Kb/s Supports remote wake-up and power management Cable length ca. 140 cm