--- /dev/null
+--- a/arch/mips/ath79/Kconfig
++++ b/arch/mips/ath79/Kconfig
+@@ -300,6 +300,7 @@ config ATH79_MACH_RB750
+ bool "MikroTik RouterBOARD 750 support"
+ select SOC_AR724X
+ select ATH79_DEV_ETH
++ select ATH79_DEV_USB
+
+ config ATH79_MACH_WNDR3700
+ bool "NETGEAR WNDR3700 board support"
+--- a/arch/mips/ath79/machtypes.h
++++ b/arch/mips/ath79/machtypes.h
+@@ -53,6 +53,8 @@ enum ath79_mach_type {
+ ATH79_MACH_RB_493G, /* Mikrotik RouterBOARD 493G */
+ ATH79_MACH_RB_750, /* MikroTik RouterBOARD 750 */
+ ATH79_MACH_RB_750G_R3, /* MikroTik RouterBOARD 750GL */
++ ATH79_MACH_RB_751, /* MikroTik RouterBOARD 751 */
++ ATH79_MACH_RB_751G, /* Mikrotik RouterBOARD 751G */
+ ATH79_MACH_RW2458N, /* Redwave RW2458N */
+ ATH79_MACH_TEW_632BRP, /* TRENDnet TEW-632BRP */
+ ATH79_MACH_TEW_673GRU, /* TRENDnet TEW-673GRU */