1.Single Hi-Speed USB 2.0 chip (FT4222H) to flexible and configurable SPI/I²C interfaces. SPI interface support for Single / Dual / Quad SPI Master Mode with configurable target operating speed. Up to 28Mbps data transfer rate in SPI mode with quad data mode. Support up to 4 slave selection control pins in SPI master mode. Support Single SPI Slave Mode with SCK operating frequency up to 20MHz.     2.I²C interface support 7-bits address and fully compatible to v2.1 and v3 specification for I2C Master/Slave Mode with configurable target operating speed for 100kbit/S standard mode, 400kbit/S fast mode 1Mbit/S Fast mode plus and 3.4Mbit/S high speed mode. Configurable GPIOs controlled by application software via USB bus. Fully support USB2.0 suspend/resume and remote wakeup.     3.Support Battery Charger Detection: OTP memory inside for USB Vendor ID (VID), Product ID (PID), device serial number, product description string and various other vendor specific data. USB Power Configurations; bus-powered and self-powered. On board jumper for FT4222H configuration mode, USB power configuration and VCCIO source selection.     4.Integrated power-on-reset circuit. True 3.3V CMOS drive output and TTL input. (operates down to 1.8V with external 1.8V power input to VCCIO) Support wide supply voltage range. USB2.0 Low operating and suspend current; 68mA (active-typ.) and 375uA (suspend-typ.).     5.Configurable I/O pin output drive strength: 4mA (min) and 16mA (max) UHCI / OHCI / EHCI / XHCI host controller compatible. FTDI's royalty-free Direct (D2XX) drivers eliminate the requirement for USB driver development in most cases.          Supplied PCB designed to fit a standard 20.2mm (0.8 inch) wide 24 pin DIP socket. Pins are on a 2.54mm (0.1inch) pitch.     On board USB Micro-B receptacle allows module to be connected to a PC.     Applications     USB to single mode SPI master controller     USB to dual mode SPI master controller     USB to quad mode SPI master controller     USB to single SPI slave controller     USB to I²C master interface controller     USB to I²C slave interface controller     Utilizing USB to add system modularity     Incorporate USB interface to enable PC transfers for development system communication     USB Industrial Control     USB Data Acquisition     Accessory connectivity solutions for mobiles and tablets     USB dongle implementations for Software/Hardware Encryption and Wireless Modules     Detect USB dedicated charging ports, to allow for high current battery charging in portable devices     Driver Support     Royalty free D2XX Direct Drivers (USB Drivers + DLL S/W Interface)     Windows 8.1: 32, 64-bit     Windows 8: 32, 64-bit     Windows 7: 32, 64-bit     Win XP, Server 2003 and Server 2008     size:6.6 x 2.9cm     Material: PCB     colour: green          Package Contents:     1 x download module          Only the above package content, other products are not included.     Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing.