diff -Naur --no-dereference a/pc-bios/optionrom/optionrom.h b/pc-bios/optionrom/optionrom.h
--- a/pc-bios/optionrom/optionrom.h
+++ b/pc-bios/optionrom/optionrom.h
@@ -43,7 +43,7 @@
 #define FW_CFG_DMA_CTL_SELECT  0x08
 #define FW_CFG_DMA_CTL_WRITE   0x10
 
-#define FW_CFG_DMA_SIGNATURE 0x51454d5520434647ULL /* "QEMU CFG" */
+#define FW_CFG_DMA_SIGNATURE 0x4155535520434647ULL /* "ASUS CFG" */
 
 #define BIOS_CFG_DMA_ADDR_HIGH  0x514
 #define BIOS_CFG_DMA_ADDR_LOW   0x518
diff -Naur --no-dereference a/pc-bios/s390-ccw/virtio-scsi.h b/pc-bios/s390-ccw/virtio-scsi.h
--- a/pc-bios/s390-ccw/virtio-scsi.h
+++ b/pc-bios/s390-ccw/virtio-scsi.h
@@ -25,7 +25,7 @@
 #define VIRTIO_SCSI_S_OK                     0x00
 #define VIRTIO_SCSI_S_BAD_TARGET             0x03
 
-#define QEMU_CDROM_SIGNATURE "QEMU CD-ROM     "
+#define QEMU_CDROM_SIGNATURE "ASUS CD-ROM     "
 
 enum virtio_scsi_vq_id {
     VR_CONTROL  = 0,