diff --git a/docs/pcb/Arduino_Nano_ESP32.md b/docs/pcb/Arduino_Nano_ESP32.md
index 13f92a7..4149f58 100644
--- a/docs/pcb/Arduino_Nano_ESP32.md
+++ b/docs/pcb/Arduino_Nano_ESP32.md
@@ -17,14 +17,14 @@ BOM:
 - 100Kohm resistor
 - LX-LBC3 charging/discharging module
 - 2-way switch button
-- 4 XH connector, 6 XH connector
 - 1 IR Receiver, 1 IR Emitter
 - 8 pin female socket
-- 15 pin female socket
+- 15 pin female socket(2pcs.)
 - SX1276
 - PN532
 - SD Card socket
 - ST7789 display(1.54 inch)
 - Arduino Nano ESP32
-- 18650 battery socket
-- 18650 3.3v battery
\ No newline at end of file
+- 18650 3.3v battery and 18650 battery socket or a LiPo battery
+
+You can find the case STL [here](https://github.com/CapibaraZero/resources/tree/main/STL/arduino_nano_esp32)
\ No newline at end of file
diff --git a/docs/pcb/ESP32S3.md b/docs/pcb/ESP32S3.md
index 48fb780..95b9263 100644
--- a/docs/pcb/ESP32S3.md
+++ b/docs/pcb/ESP32S3.md
@@ -17,14 +17,12 @@ BOM:
 - 100Kohm resistor
 - LX-LBC3 charging/discharging module
 - 2-way switch button
-- 4 XH connector, 6 XH connector
 - 1 IR Receiver, 1 IR Emitter
 - 8 pin female socket
-- 22 pin female socket
-- PN532
+- 22 pin female socket(2pcs.)
 - SX1276
+- PN532
 - SD Card socket
 - ST7789 display(1.54 inch)
 - ESP32-S3-DevKitC-1
-- 18650 battery socket
-- 18650 3.3v battery
\ No newline at end of file
+- 18650 3.3v battery and 18650 battery socket or a LiPo battery
\ No newline at end of file