diff --git a/ft2232_spi.c b/ft2232_spi.c
index 1106a0e..d5d31d5 100644
--- a/ft2232_spi.c
+++ b/ft2232_spi.c
@@ -38,6 +38,7 @@
 #define FTDI_FT2232H_PID	0x6010
 #define FTDI_FT4232H_PID	0x6011
 #define FTDI_FT232H_PID		0x6014
+#define FTDI_FT4233H_PID	0x6041
 #define TIAO_TUMPA_PID		0x8a98
 #define TIAO_TUMPA_LITE_PID	0x8a99
 #define AMONTEC_JTAGKEY_PID	0xCFF8
@@ -63,6 +64,7 @@
 	{FTDI_VID, FTDI_FT2232H_PID, OK, "FTDI", "FT2232H"},
 	{FTDI_VID, FTDI_FT4232H_PID, OK, "FTDI", "FT4232H"},
 	{FTDI_VID, FTDI_FT232H_PID, OK, "FTDI", "FT232H"},
+	{FTDI_VID, FTDI_FT4233H_PID, OK, "FTDI", "FT4233H"},
 	{FTDI_VID, TIAO_TUMPA_PID, OK, "TIAO", "USB Multi-Protocol Adapter"},
 	{FTDI_VID, TIAO_TUMPA_LITE_PID, OK, "TIAO", "USB Multi-Protocol Adapter Lite"},
 	{FTDI_VID, AMONTEC_JTAGKEY_PID, OK, "Amontec", "JTAGkey"},
@@ -343,6 +345,9 @@
 		} else if (!strcasecmp(arg, "232H")) {
 			ft2232_type = FTDI_FT232H_PID;
 			channel_count = 1;
+		} else if (!strcasecmp(arg, "4233H")) {
+			ft2232_type = FTDI_FT4233H_PID;
+			channel_count = 4;
 		} else if (!strcasecmp(arg, "jtagkey")) {
 			ft2232_type = AMONTEC_JTAGKEY_PID;
 			channel_count = 2;