diff --git a/machine.h b/machine.h
index 5e252af..d7daa96 100644
--- a/machine.h
+++ b/machine.h
@@ -20,6 +20,7 @@
 // #define MACHINE_HI_K0402WS
 // #define MACHINE_K0501W_V2_0
 // #define MACHINE_LIANGUO_ZX_SWTGW215AS
+// #define MACHINE_ZX310S_4T2XH
 // #define MACHINE_DEFAULT_8C_1SFP
 
 typedef struct {