Description:This adapter by Delock enables you to connect a serial device via the 4 pin pin header connector (RX and TX) with the GPIO interface of your Raspberry Pi by using the included cable. Then configure your system according to the requirement.Specification:• Connectors: 1 x Sub-D 9 pin male RS-232 1 x 4 pin pin header • Supported baud rate up to 230 Kb/s • Level shifter from RS-232 3.3 V to 5 V on Raspberry Pi • Supported input voltage: 2.7 V ~ 5.25 V • Dimensions (LxWxH): ca. 48 x 43 x 16 mm • OS independent, no driver installation necessarySystem requirements:• A free pin header connector • USB connection cablesPackage content:• Adapter • Cable pin header 4 pin > 5 pin