diff --git a/hypervisor/arch/x86/configs/nuc6cayh.config b/hypervisor/arch/x86/configs/nuc6cayh.config
index dd77173b6..2e6bd73f0 100644
--- a/hypervisor/arch/x86/configs/nuc6cayh.config
+++ b/hypervisor/arch/x86/configs/nuc6cayh.config
@@ -1,3 +1,7 @@
 # Generated by Kconfiglib (https://github.com/ulfalizer/Kconfiglib)
 CONFIG_BOARD="nuc6cayh"
-CONFIG_SERIAL_LEGACY=y
+# There is no ready-made serial connector on NUC6CAYH, but developer could
+# enable HSUART at PCI 0:18.0 by soldering Tx/Rx wires from M.2 connector;
+CONFIG_SERIAL_PCI=y
+CONFIG_SERIAL_PCI_BDF="0:18.0"
+CONFIG_HV_RAM_START=0x12200000