On/Off (167) USB (139) I2C, USB (26) UART, USB (24) SPI (20) SPI, USB (17) Parallel (14) I2C, SPI, USB (14) I2C (11) I2C, SMBus, SPI, USB (10) UART (7) I2C, SMBus, USB (7) I2C, UART (7) I2C, SPI, Serial, USB (6) Serial (4) Serial, USB (4) I2C, SPI, UART (3) I2C, UART, USB (3) I2C, SPI, UART, USB (3) SPI, UART, USB (3) Parallel, SPI, USB (3) I2S, SMBus, SPI, UART, USB (3) RS-232, RS-485, UART, USB (3) I2C, SATA (3) SPI, Serial (2) SPI, UART (2) SMBus, USB (2) RS-232, RS-422, RS-485, UART, USB (2) I2C, I2S, SPI, UART, USB (2) 2-Wire, I2C, SPI, Serial, UART, USB (2) 2-Wire, I2C, SMBus (1) I2C, SPI (1) I2C, SMBus (1) I2C, SPI, Serial, UART, USB (1) SPI, Serial, UART, USB (1) I2C, SMBus, SPI, Serial, USB (1) I2C, Parallel, SMBus, USB (1) GPIO, I2C, SPI (1) I2C, Parallel, SPI, UART (1) On/Off, Serial (1) 8 bit, USB (1) RS-232, UART, USB (1) 2-Wire, I2C, SMBus, Serial, USB (1) SATA, SPI, UART (1) Parallel, Serial, USB (1) GPIO, I2C, SPI, UART, USB (1) I2C, RS-232, RS-422, RS-485, SPI, UART, USB (1) GPIO, I2C, SPI, Serial, UART, USB (1)