Cypress CY7C64613-128NC FX USB 1.1 chip, 12Mbps full speed transmission 8051 compatible P0, P1, P2, and P3 Ports 64K RAM D0-D7 data bus and A0-A15 data address 40-pin connection to compatible 8052 simulated normal 8052 I/O control Two UART serial ports USB-to-Parallel interface, USB to ATA/ATAPI interface Supports discrete expansion slot mode 8052 I/O (P0, P1, P2 and P3) circuit protection 3.3V or 5V I/O interface Supports full windows debugging and building environment (Keil software) Supports Windows 98SE/ ME/2000/XP