diff --git a/README.md b/README.md
index 7814aa5..d5530b4 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,9 @@
 # BigSurface
 The name comes from macOS Big Sur.
 Big Sur + Surface -> Big Surface (LOL)
+
 PS:If you have a better name, please let me know.
+
 **A proposition for a fully intergrated kext for all Surface Pro related hardwares**
 
 ## TODO
@@ -10,19 +12,20 @@ PS:If you have a better name, please let me know.
   > The code is based on VoodooI2CHID.kext, but added keyboard support.
 - Battery status--Surface Serial Hub            **Most Important**
   > See https://github.com/linux-surface/surface-aggregator-module.
-  > To obtain the battery readout, one needs to register the operation handler for _SAN device(_SAN.RQST) and send the request to SSH device.
-  > SSH is a UART controller, **the low level uart operation** is needed to be completed. Thus an expert in UART development is needed.
+  > To obtain the battery readout, one needs to register the operation handler for _SAN device(called via _SAN.RQST) and send the request to SSH device.
+  > SSH is a UART controller, **the low level uart operation(tx, rx)** is needed to be completed. Thus an expert in UART development is needed.
   > Other than that, the rest of the code is not hard to port, mainly how to encode and decode the request packages. 
   >
   > The Surface Laptop and Surface Book things can be deleted.
 - Performance mode
-  
   > Depends on Surface Serial Hub driver
 - Buttons
   > Surface onboard GPIO buttons. ACPI device name: MSBT HID:MSHW0040
   > Not finished yet.
+  > 
   > To drive it is quite simple, just register the corresponding GPIO interrupts and handle them.
 - Ambient Light Sensor
+  > ACPI device name: ACSD, attached under I2C4
   > The Linux source code is attached in the folder, just one source file, should be 'easy' to port.(Maybe we don't need gesture and proximity)
   > Driver should attach to VoodooI2CDeviceNub and use it to perform I2C IO.
   > See VoodooI2CSynaptics for code reference.
@@ -32,4 +35,4 @@ PS:If you have a better name, please let me know.
   > Not so important, they use I2C to transfert data. Linux code available.
 - Touch Screen
   > Device id: 0x34E4
-  > Linux uses `mei` to communicate with the touch screen(ipts), don't know the equivalant thing on macOS.
+  > Linux uses `mei` to communicate with the touch screen(ipts), don't know the equivalant thing on macOS nor how to communicate with it.