diff --git a/device-types/Synology/RS3621xs+.yaml b/device-types/Synology/RS3621xs+.yaml
index 2fe48232c7..ab9d0a855f 100644
--- a/device-types/Synology/RS3621xs+.yaml
+++ b/device-types/Synology/RS3621xs+.yaml
@@ -18,6 +18,10 @@ module-bays:
   - name: PSU-2
     label: '2'
     position: PSU-2
+  - name: PCIe Slot 1
+    position: '1'
+  - name: PCIe Slot 2
+    position: '2'
 interfaces:
   - name: LAN1
     type: 1000base-t
diff --git a/module-types/Synology/E25G30-F2.yaml b/module-types/Synology/E25G30-F2.yaml
new file mode 100644
index 0000000000..099b938da6
--- /dev/null
+++ b/module-types/Synology/E25G30-F2.yaml
@@ -0,0 +1,11 @@
+---
+manufacturer: Synology
+model: E25G30-F2
+part_number: E25G30-F2
+description: Dual-port 25GbE SFP28 PCIe 3.0 x8 Network adapter
+comments: '[E25G30-F2 Specs](https://www.synology.com/en-us/products/E25G30-F2#specs)'
+interfaces:
+  - name: '{module}/LAN 1'
+    type: 25gbase-x-sfp28
+  - name: '{module}/LAN 2'
+    type: 25gbase-x-sfp28
diff --git a/module-types/Synology/PSU 500W-RP Module_2.yml b/module-types/Synology/PSU 500W-RP Module_2.yml
new file mode 100644
index 0000000000..00c4429714
--- /dev/null
+++ b/module-types/Synology/PSU 500W-RP Module_2.yml	
@@ -0,0 +1,15 @@
+---
+manufacturer: Synology
+model: PSU 500W-RP Module_2
+part_number: PSU 500W-RP Module_2
+description: Redundant Power Module 500W
+weight: 0.77
+weight_unit: kg
+comments: |
+  [PSU 500W-RP Redundant Power Module 500W](https://www.synology.com/de-de/products/spare_parts?search_by=category&category=PSU)
+
+  for FS3410, SA6400, SA3610, SA3410, RS4021xs+, RS3621xs+, RS3621RPxs, RS2821RP+, RX1223RP.
+power-ports:
+  - name: '{module}'
+    type: iec-60320-c14
+    maximum_draw: 500
diff --git a/module-types/Synology/PSU 550W-RP Module_1.yml b/module-types/Synology/PSU 550W-RP Module_1.yml
new file mode 100644
index 0000000000..d5b658a203
--- /dev/null
+++ b/module-types/Synology/PSU 550W-RP Module_1.yml	
@@ -0,0 +1,15 @@
+---
+manufacturer: Synology
+model: PSU 550W-RP Module_1
+part_number: PSU 550W-RP Module_1
+description: Redundant Power Module 550W
+weight: 0.82
+weight_unit: kg
+comments: |
+  [PSU 550W-RP Redundant Power Module 550W](https://www.synology.com/de-de/products/spare_parts?search_by=category&category=PSU)
+
+  for FS3410, SA6400, SA3610, SA3410, RS4021xs+, RS3621xs+, RS3621RPxs, RS2821RP+, RX1223RP.
+power-ports:
+  - name: '{module}'
+    type: iec-60320-c14
+    maximum_draw: 550