diff --git a/README.md b/README.md
index b5f9ac6..4718ab5 100644
--- a/README.md
+++ b/README.md
@@ -35,6 +35,11 @@ This ESP32 Arduino/IDF library for HUB75 / HUB75E connector type 64x32 RGB LED 1
 
 If you wanna ask "*...OK, OK, than whats the price for those features?*" I'll tell you - "[memory](/doc/i2s_memcalc.md), you pay it all by precious MCU's memory for DMA buffer".
 
+## ESP32 Supported
+Espressif have kept the 'ESP32' name for all their chips forbrand recognition, but their new variant MCU's are very different to the ESP32 this library was built for.
+
+This library supports the *original* ESP32 only. That being the ESP-WROOM-32 module with ESP32‑D0WDQ6 chip. This MCU has 520kB of SRAM which is much more than all the recent 'reboots' of the ESP32 such as the S2, S3, C3 etc. If you want to use this library, use with an original ESP32 as it has the most SRAM for DMA.
+
 ## Panels Supported
 * 64x32 (width x height) pixel 1/16 Scan LED Matrix 'Indoor' Panel, such as this [typical RGB panel available for purchase](https://www.aliexpress.com/item/256-128mm-64-32-pixels-1-16-Scan-Indoor-3in1-SMD2121-RGB-full-color-P4-led/32810362851.html).
 * 64x64 pixel 1/32 Scan LED Matrix 'Indoor' Panel.