diff --git a/src/ch341a_i2c.h b/src/ch341a_i2c.h
index 7911900..2a34b69 100644
--- a/src/ch341a_i2c.h
+++ b/src/ch341a_i2c.h
@@ -6,7 +6,7 @@
 
 #include <stdint.h>
 
-#define MAX_EEPROM_SIZE			131072 /* For 24c1024*/
+#define MAX_EEPROM_SIZE			262144 /* For 24c2048*/
 
 #define EEPROM_I2C_BUS_ADDRESS		0x50
 
@@ -358,6 +358,7 @@ const static struct EEPROM eepromlist[] = {
 	{ "24c256",  32768,  32/*64*/,  2, 0x00 },
 	{ "24c512",  65536,  32/*128*/, 2, 0x00 },
 	{ "24c1024", 131072, 32/*128*/, 2, 0x01 },
+	{ "24c2048", 262144, 32/*256*/, 2, 0x03 },
 	{ 0, 0, 0, 0 }
 };
 
diff --git a/src/main.c b/src/main.c
index 4c4cccf..7a7a0b4 100644
--- a/src/main.c
+++ b/src/main.c
@@ -40,7 +40,7 @@ extern char eepromname[12];
 extern int eepromsize;
 extern int mw_eepromsize;
 extern int org;
-#define EHELP	" -E             select I2C EEPROM {24c01|24c02|24c04|24c08|24c16|24c32|24c64|24c128|24c256|24c512|24c1024}\n" \
+#define EHELP	" -E             select I2C EEPROM {24c01|24c02|24c04|24c08|24c16|24c32|24c64|24c128|24c256|24c512|24c1024|24c2048}\n" \
 		"                select Microwire EEPROM {93c06|93c16|93c46|93c56|93c66|93c76|93c86|93c96} (need SPI-to-MW adapter)\n" \
 		" -8             set organization 8-bit for Microwire EEPROM(default 16-bit) and set jumper on SPI-to-MW adapter\n" \
 		" -f <addr len>  set manual address size in bits for Microwire EEPROM(default auto)\n"