diff --git a/Keyboard-with-FPC-60pin-0.5mm.md b/Keyboard-with-FPC-60pin-0.5mm.md
new file mode 100644
index 0000000..95a0bae
--- /dev/null
+++ b/Keyboard-with-FPC-60pin-0.5mm.md
@@ -0,0 +1,17 @@
+usb-serial | keyboard IO number | keyboard IO register 
+-- | -- | --
+3v3 | 3 | 3v3
+TXD | 16 | PA10
+RXD | 15 | PA9
+GND | 1 | GND
+ 
+
+USB  | keyboard IO number | keyboard IO register
+-- | -- | --
+5v power | 5 | 5v
+GND | 22 | GND
+data + | 18 | PA12(USB_DP)
+data - | 17 | PA11(USB_DM)
+
+can not have USB and usb-serial both ON
+