diff --git a/machine.c b/machine.c
index 59bf438..60aeac7 100644
--- a/machine.c
+++ b/machine.c
@@ -14,12 +14,12 @@ __code const struct machine machine = {
 	.sfp_port[0].pin_detect = GPIO50_I2C_SCL2_UART1_TX,
 	.sfp_port[0].pin_los = GPIO10_LED10,
 	.sfp_port[0].pin_tx_disable = GPIO_NA,
-	.sfp_port[0].sds = 1,
+	.sfp_port[0].sds = 0,
 	.sfp_port[0].i2c = { .sda = GPIO41_I2C_SDA3_MDIO1, .scl = GPIO40_I2C_SCL3_MDC1 },
 	.sfp_port[1].pin_detect = GPIO30_ACL_BIT3_EN,
 	.sfp_port[1].pin_los = GPIO37,
 	.sfp_port[1].pin_tx_disable = GPIO_NA,
-	.sfp_port[1].sds = 0,
+	.sfp_port[1].sds = 1,
 	.sfp_port[1].i2c = { .sda = GPIO39_I2C_SDA4, .scl = GPIO40_I2C_SCL3_MDC1 },
 	.reset_pin = GPIO46_I2C_SCL0,
 };