The JM20336 is a high-performance bridge controller that translates communication between SATA II 3.0G and Hi-Speed USB. Featuring a 15MIPS 8051 processor, dual-port SATA II 3.0G, and USB technology, it supports USB Mass Storage Class Bulk-Only Transport and dual LUN applications. The SATA controller can function as either host or device, enabling seamless SATA-to-SATA and USB-to-SATA conversions.