diff --git a/README.md b/README.md
index 6187a0c..d991530 100644
--- a/README.md
+++ b/README.md
@@ -13,7 +13,13 @@ This repository specifies the control protocol implemented by [gex-core](https:/
 - [UNIT_DO.md](UNIT_DO.md) - Digital Output
 - [UNIT_DI.md](UNIT_DI.md) - Digital Input
 - [UNIT_NEOPIXEL.md](UNIT_NEOPIXEL.md) - NeoPixel driver
-- [UNIT_SIPO.md](UNIT_SIPO.md) - Shift Register Driver with multicast support
+- [UNIT_SIPO.md](UNIT_SIPO.md) - Shift Register Driver with multicast
 - [UNIT_I2C.md](UNIT_I2C.md) - I2C master
-- [UNIT_SPI.md](UNIT_SPI.md) - SPI master up to 16 slaves and multicast support
-
+- [UNIT_SPI.md](UNIT_SPI.md) - SPI master with up to 16 slaves and multicast
+- UNIT_FCAP.md - Frequency, pulse length, PWM measurement
+- UNIT_1WIRE.md - 1-Wire master
+- UNIT_ADC.md - ADC with raw access, triggering, periodic capture
+- UNIT_DAC.md - DAC with DDS
+- UNIT_PWMDIM.md - Simpel PWM output
+- UNIT_TOUCH.md - Touch sense
+- UNIT_USART.md - UART/USART/RS485