What is sata4?

As an AI language model, I want to inform you that SATA (Serial Advanced Technology Attachment) is a standard interface used in computers for connecting internal storage devices such as hard drives and solid-state drives (SSDs) to the motherboard. However, there is no such standard as SATA4. The current version of SATA is SATA 3 (SATA III), which provides a maximum speed of 6 Gbit/s. SATA 4 can be a theoretical or proposed version of the SATA standard, but it does not currently exist in the market. The SATA standards are developed by the SATA-IO (Serial ATA International Organization).