+You can us the 'lspci' command to list existing PCI devices.
+
+`pcie`=`<boolean>` ('default =' `0`);;
+
+Choose the PCI-express bus (needs the 'q35' machine model).
+
+`rombar`=`<boolean>` ('default =' `1`);;
+
+Specify whether or not the device's ROM will be visible in the guest's memory map.
+
+`romfile`=`<string>` ;;
+
+Custom pci device rom filename (must be located in /usr/share/kvm/).
+
+`x-vga`=`<boolean>` ('default =' `0`);;
+
+Enable vfio-vga device support.
+
+`hotplug`: `<string>` ('default =' `network,disk,usb`)::
+
+Selectively enable hotplug features. This is a comma separated list of hotplug features: 'network', 'disk', 'cpu', 'memory' and 'usb'. Use '0' to disable hotplug completely. Value '1' is an alias for the default 'network,disk,usb'.
+
+`hugepages`: `<1024 | 2 | any>` ::
+
+Enable/disable hugepages memory.
+
+`ide[n]`: `[file=]<volume> [,aio=<native|threads>] [,backup=<1|0>] [,bps=<bps>] [,bps_max_length=<seconds>] [,bps_rd=<bps>] [,bps_rd_max_length=<seconds>] [,bps_wr=<bps>] [,bps_wr_max_length=<seconds>] [,cache=<enum>] [,cyls=<integer>] [,detect_zeroes=<1|0>] [,discard=<ignore|on>] [,format=<enum>] [,heads=<integer>] [,iops=<iops>] [,iops_max=<iops>] [,iops_max_length=<seconds>] [,iops_rd=<iops>] [,iops_rd_max=<iops>] [,iops_rd_max_length=<seconds>] [,iops_wr=<iops>] [,iops_wr_max=<iops>] [,iops_wr_max_length=<seconds>] [,mbps=<mbps>] [,mbps_max=<mbps>] [,mbps_rd=<mbps>] [,mbps_rd_max=<mbps>] [,mbps_wr=<mbps>] [,mbps_wr_max=<mbps>] [,media=<cdrom|disk>] [,model=<model>] [,replicate=<1|0>] [,rerror=<ignore|report|stop>] [,secs=<integer>] [,serial=<serial>] [,shared=<1|0>] [,size=<DiskSize>] [,snapshot=<1|0>] [,trans=<none|lba|auto>] [,werror=<enum>]` ::
+
+Use volume as IDE hard disk or CD-ROM (n is 0 to 3).
+
+`aio`=`<native | threads>` ;;
+
+AIO type to use.
+
+`backup`=`<boolean>` ;;
+
+Whether the drive should be included when making backups.
+
+`bps`=`<bps>` ;;
+
+Maximum r/w speed in bytes per second.
+
+`bps_max_length`=`<seconds>` ;;
+
+Maximum length of I/O bursts in seconds.
+
+`bps_rd`=`<bps>` ;;
+
+Maximum read speed in bytes per second.
+
+`bps_rd_max_length`=`<seconds>` ;;
+
+Maximum length of read I/O bursts in seconds.
+
+`bps_wr`=`<bps>` ;;
+
+Maximum write speed in bytes per second.
+
+`bps_wr_max_length`=`<seconds>` ;;
+
+Maximum length of write I/O bursts in seconds.
+
+`cache`=`<directsync | none | unsafe | writeback | writethrough>` ;;
+
+The drive's cache mode
+
+`cyls`=`<integer>` ;;
+
+Force the drive's physical geometry to have a specific cylinder count.
+
+`detect_zeroes`=`<boolean>` ;;
+
+Controls whether to detect and try to optimize writes of zeroes.
+
+`discard`=`<ignore | on>` ;;
+
+Controls whether to pass discard/trim requests to the underlying storage.
+
+`file`=`<volume>` ;;
+
+The drive's backing volume.
+
+`format`=`<cloop | cow | qcow | qcow2 | qed | raw | vmdk>` ;;
+
+The drive's backing file's data format.
+
+`heads`=`<integer>` ;;
+
+Force the drive's physical geometry to have a specific head count.
+
+`iops`=`<iops>` ;;
+
+Maximum r/w I/O in operations per second.
+
+`iops_max`=`<iops>` ;;
+
+Maximum unthrottled r/w I/O pool in operations per second.
+
+`iops_max_length`=`<seconds>` ;;
+
+Maximum length of I/O bursts in seconds.
+
+`iops_rd`=`<iops>` ;;
+
+Maximum read I/O in operations per second.
+
+`iops_rd_max`=`<iops>` ;;
+
+Maximum unthrottled read I/O pool in operations per second.
+
+`iops_rd_max_length`=`<seconds>` ;;
+
+Maximum length of read I/O bursts in seconds.
+
+`iops_wr`=`<iops>` ;;
+
+Maximum write I/O in operations per second.
+
+`iops_wr_max`=`<iops>` ;;
+
+Maximum unthrottled write I/O pool in operations per second.
+
+`iops_wr_max_length`=`<seconds>` ;;
+
+Maximum length of write I/O bursts in seconds.
+
+`mbps`=`<mbps>` ;;
+
+Maximum r/w speed in megabytes per second.
+
+`mbps_max`=`<mbps>` ;;
+
+Maximum unthrottled r/w pool in megabytes per second.
+
+`mbps_rd`=`<mbps>` ;;
+
+Maximum read speed in megabytes per second.
+
+`mbps_rd_max`=`<mbps>` ;;
+
+Maximum unthrottled read pool in megabytes per second.
+
+`mbps_wr`=`<mbps>` ;;
+
+Maximum write speed in megabytes per second.
+
+`mbps_wr_max`=`<mbps>` ;;
+
+Maximum unthrottled write pool in megabytes per second.
+
+`media`=`<cdrom | disk>` ('default =' `disk`);;
+
+The drive's media type.
+
+`model`=`<model>` ;;
+
+The drive's reported model name, url-encoded, up to 40 bytes long.
+
+`replicate`=`<boolean>` ('default =' `1`);;
+
+Whether the drive should considered for replication jobs.
+
+`rerror`=`<ignore | report | stop>` ;;
+
+Read error action.
+
+`secs`=`<integer>` ;;
+
+Force the drive's physical geometry to have a specific sector count.
+
+`serial`=`<serial>` ;;
+
+The drive's reported serial number, url-encoded, up to 20 bytes long.
+
+`shared`=`<boolean>` ('default =' `0`);;
+
+Mark this locally-managed volume as available on all nodes.
++
+WARNING: This option does not share the volume automatically, it assumes it is shared already!
+
+`size`=`<DiskSize>` ;;
+
+Disk size. This is purely informational and has no effect.
+
+`snapshot`=`<boolean>` ;;
+
+Controls qemu's snapshot mode feature. If activated, changes made to the disk are temporary and will be discarded when the VM is shutdown.
+
+`trans`=`<auto | lba | none>` ;;
+
+Force disk geometry bios translation mode.
+
+`werror`=`<enospc | ignore | report | stop>` ;;
+
+Write error action.
+
+`ipconfig[n]`: `[gw=<GatewayIPv4>] [,gw6=<GatewayIPv6>] [,ip=<IPv4Format/CIDR>] [,ip6=<IPv6Format/CIDR>]` ::
+
+cloud-init: Specify IP addresses and gateways for the corresponding interface.