diff --git a/README.md b/README.md
index 24cb810..856bdcd 100644
--- a/README.md
+++ b/README.md
@@ -75,7 +75,7 @@ wget -o virtio-win.iso "https://fedorapeople.org/groups/virt/virtio-win/direct-d
   1. Boot the host into Windows.
   2. [Download and install GPU-Z](https://www.techpowerup.com/gpuz/).
   3. [Download and install a HEX editor](https://github.com/bwrsandman/Bless).
-  3. Open GPU-Z and backup the GPU BIOS. Right next to the `Bios Version`; in my case `80.04.C3.00.0F`, there is an icon for backup. A file named `GK104.rom` will be created. [There is also a way of doing it in Linux]() but it did not work for me.
+  3. [Open GPU-Z and backup the GPU BIOS](/Screenshots/vBIOS.png). Right next to the `Bios Version`; in my case `80.04.C3.00.0F`, there is an icon for backup. A file named `GK104.rom` will be created. [There is also a way of doing it in Linux]() but it did not work for me.
   4. Open the ROM (`GK104.rom`) in the HEX editor.
   5. After a bunch of `00` there is a `55` or `U` in HEX, delete everything before the `55`, and save. I strongly recommend not to overwrite the original ROM.
 
diff --git a/Screenshots/vBIOS.png b/Screenshots/vBIOS.png
new file mode 100755
index 0000000..d70dcad
Binary files /dev/null and b/Screenshots/vBIOS.png differ
diff --git a/scripts/iommu.sh b/scripts/iommu.sh
new file mode 100644
index 0000000..828288c
--- /dev/null
+++ b/scripts/iommu.sh
@@ -0,0 +1,10 @@
+#!/bin/bash
+## Outputs the IOMMU groups and the devices inside them
+## Source [https://wiki.installgentoo.com/index.php/PCI_passthrough#Step_2:_Find_out_your_IOMMU_groups]
+for iommu_group in \
+  $(find /sys/kernel/iommu_groups/ -maxdepth 1 -mindepth 1 -type d); do \
+  echo "IOMMU group $(basename "$iommu_group")"; \
+  for device in $(ls -1 "$iommu_group"/devices/); do \
+    echo -n $'\t'; lspci -nns "$device"; \
+  done; \
+done