A variety of single-ended I/O standards are available in the UltraScale architecture I/O. For a complete list of supported I/O standards and detailed information about each one, refer to the SelectIO Resources chapter of the UltraScale Architecture SelectIO Resources User Guide (UG571) [Ref 10]. Tables at the end of this chapter summarize for each supported I/O standard which ones support DRIVE and SLEW attributes, bidirectional buffers, and the DCI options. It also describes which I/O standards are supported in the high-performance (HP) and high-range (HR) I/O banks.