diff --git a/docs/static/mb/device/usb-windows-chrome.PNG b/docs/static/mb/device/usb-windows-chrome.png similarity index 100% rename from docs/static/mb/device/usb-windows-chrome.PNG rename to docs/static/mb/device/usb-windows-chrome.png diff --git a/docs/static/mb/device/usb-windows-edge-1.PNG b/docs/static/mb/device/usb-windows-edge-1.png similarity index 100% rename from docs/static/mb/device/usb-windows-edge-1.PNG rename to docs/static/mb/device/usb-windows-edge-1.png diff --git a/docs/static/mb/device/usb-windows-edge-2.PNG b/docs/static/mb/device/usb-windows-edge-2.png similarity index 100% rename from docs/static/mb/device/usb-windows-edge-2.PNG rename to docs/static/mb/device/usb-windows-edge-2.png diff --git a/docs/static/mb/device/usb-windows-firefox-1.PNG b/docs/static/mb/device/usb-windows-firefox-1.png similarity index 100% rename from docs/static/mb/device/usb-windows-firefox-1.PNG rename to docs/static/mb/device/usb-windows-firefox-1.png diff --git a/docs/static/mb/device/usb-windows-firefox-2.PNG b/docs/static/mb/device/usb-windows-firefox-2.png similarity index 100% rename from docs/static/mb/device/usb-windows-firefox-2.PNG rename to docs/static/mb/device/usb-windows-firefox-2.png diff --git a/docs/static/mb/device/usb-windows-ie11-1.PNG b/docs/static/mb/device/usb-windows-ie11-1.png similarity index 100% rename from docs/static/mb/device/usb-windows-ie11-1.PNG rename to docs/static/mb/device/usb-windows-ie11-1.png diff --git a/docs/static/mb/device/usb-windows-ie11-2.PNG b/docs/static/mb/device/usb-windows-ie11-2.png similarity index 100% rename from docs/static/mb/device/usb-windows-ie11-2.PNG rename to docs/static/mb/device/usb-windows-ie11-2.png