diff --git a/device-types/LANCOM/1793VA-4G.yaml b/device-types/LANCOM/1793VA-4G.yaml
index a9570508c3..125b91f921 100644
--- a/device-types/LANCOM/1793VA-4G.yaml
+++ b/device-types/LANCOM/1793VA-4G.yaml
@@ -7,6 +7,7 @@ u_height: 0
 is_full_depth: false
 weight: 520
 weight_unit: g
+subdevice_role: child
 comments: '[LANCOM 1793VA-4G Data sheet](https://www.lancom-systems.de/download/LC-1793VA-4G/DS_1793VA-4G_DE.pdf)'
 power-ports:
   - name: PS1
diff --git a/device-types/LANCOM/1793VA.yaml b/device-types/LANCOM/1793VA.yaml
new file mode 100644
index 0000000000..bbf4a262cb
--- /dev/null
+++ b/device-types/LANCOM/1793VA.yaml
@@ -0,0 +1,39 @@
+---
+manufacturer: LANCOM
+model: 1793VA
+slug: lancom-1793va
+part_number: '62115'
+u_height: 0
+is_full_depth: false
+weight: 520
+weight_unit: g
+subdevice_role: child
+comments: '[LANCOM 1793VA Data sheet](https://www.lancom-systems.de/download/LC-1793VA/DS_1793VA_DE.pdf)'
+power-ports:
+  - name: PS1
+    type: dc-terminal
+    maximum_draw: 17
+interfaces:
+  - name: ETH-1
+    type: 1000base-t
+  - name: ETH-2
+    type: 1000base-t
+  - name: ETH-3
+    type: 1000base-t
+  - name: ETH-4
+    type: 1000base-t
+  - name: VDSL/ADSL
+    type: xdsl
+  - name: Analog 2/4
+    type: other
+  - name: Analog 1/3
+    type: other
+  - name: ISDN 1
+    type: 1000base-t
+  - name: ISDN 2
+    type: 1000base-t
+console-ports:
+  - name: USB
+    type: usb-a
+  - name: com
+    type: mini-din-8
diff --git a/device-types/LANCOM/1793VAW.yaml b/device-types/LANCOM/1793VAW.yaml
new file mode 100644
index 0000000000..2d9f364bdb
--- /dev/null
+++ b/device-types/LANCOM/1793VAW.yaml
@@ -0,0 +1,39 @@
+---
+manufacturer: LANCOM
+model: 1793VAW
+slug: lancom-1793vaw
+part_number: '62115'
+u_height: 0
+is_full_depth: false
+weight: 520
+weight_unit: g
+subdevice_role: child
+comments: '[LANCOM 1793VAW Data sheet](https://www.lancom-systems.de/download/LC-1793VAW/DS_1793VAW_DE.pdf)'
+power-ports:
+  - name: PS1
+    type: dc-terminal
+    maximum_draw: 17
+interfaces:
+  - name: ETH-1
+    type: 1000base-t
+  - name: ETH-2
+    type: 1000base-t
+  - name: ETH-3
+    type: 1000base-t
+  - name: ETH-4
+    type: 1000base-t
+  - name: VDSL/ADSL
+    type: xdsl
+  - name: Analog 2/4
+    type: other
+  - name: Analog 1/3
+    type: other
+  - name: ISDN 1
+    type: 1000base-t
+  - name: ISDN 2
+    type: 1000base-t
+console-ports:
+  - name: USB
+    type: usb-a
+  - name: com
+    type: mini-din-8
diff --git a/device-types/LANCOM/1926VAG.yaml b/device-types/LANCOM/1926VAG.yaml
new file mode 100644
index 0000000000..f6efd88ad9
--- /dev/null
+++ b/device-types/LANCOM/1926VAG.yaml
@@ -0,0 +1,47 @@
+---
+manufacturer: LANCOM
+model: 1926VAG
+slug: lancom-1926vag
+part_number: '62122'
+u_height: 1
+is_full_depth: false
+power-ports:
+  - name: PS1
+    type: iec-60320-c14
+    maximum_draw: 34
+interfaces:
+  - name: G.FAST/VDSL 1
+    type: xdsl
+  - name: VDSL 2
+    type: xdsl
+  - name: WAN 1 (SFP)
+    type: 1000base-x-sfp
+  - name: WAN 1
+    type: 1000base-t
+  - name: WAN 2
+    type: 1000base-t
+  - name: ETH 1
+    type: 1000base-t
+  - name: ETH 2
+    type: 1000base-t
+  - name: ETH 3
+    type: 1000base-t
+  - name: ETH 4
+    type: 1000base-t
+  - name: ANALOG 1
+    type: other
+  - name: ANALOG 2
+    type: other
+  - name: ANALOG 3
+    type: other
+  - name: ANALOG 4
+    type: other
+  - name: ISDN 1 (NT)
+    type: 1000base-t
+  - name: ISDN 2 (NT)
+    type: 1000base-t
+console-ports:
+  - name: COM
+    type: rj-45
+  - name: USB
+    type: usb-a
diff --git a/device-types/LANCOM/Rack-Mount.yaml b/device-types/LANCOM/Rack-Mount.yaml
new file mode 100644
index 0000000000..ee6608ece0
--- /dev/null
+++ b/device-types/LANCOM/Rack-Mount.yaml
@@ -0,0 +1,12 @@
+---
+manufacturer: LANCOM
+model: Rack Mount
+slug: lancom-rack-mount
+part_number: '61501'
+u_height: 1
+is_full_depth: false
+subdevice_role: parent
+is_powered: false
+comments: '[LANCOM Rack Mount Data sheet](https://www.lancom-systems.de/fileadmin/produkte/rack_mount/Rack-Mount_DE.pdf)'
+device-bays:
+  - name: Device
diff --git a/device-types/QNAP/TS-431U.yaml b/device-types/QNAP/TS-431U.yaml
new file mode 100644
index 0000000000..abcbccfe1e
--- /dev/null
+++ b/device-types/QNAP/TS-431U.yaml
@@ -0,0 +1,21 @@
+---
+manufacturer: QNAP
+model: TS-431U
+slug: qnap-ts-431u
+part_number: TS-431U
+is_full_depth: false
+airflow: side-to-rear
+comments: '[TS-431U | Hardware Specs | QNAP](https://www.qnap.com/de-de/product/ts-431u/specs/hardware)'
+weight: 9.26
+weight_unit: kg
+u_height: 1
+power-ports:
+  - name: Power
+    type: iec-60320-c14
+    maximum_draw: 250
+    allocated_draw: 35
+interfaces:
+  - name: eth0
+    type: 1000base-t
+  - name: eth1
+    type: 1000base-t