diff --git a/device-types/AudioCodes/mediant-800b-esbc.yaml b/device-types/AudioCodes/mediant-800b-esbc.yaml
new file mode 100644
index 000000000..6cf376d2e
--- /dev/null
+++ b/device-types/AudioCodes/mediant-800b-esbc.yaml
@@ -0,0 +1,43 @@
+---
+manufacturer: AudioCodes
+model: Mediant 800B ESBC
+slug: audiocodes-mediant-800b-esbc
+part_number: Mediant 800B
+u_height: 1.0
+is_full_depth: false
+subdevice_role: parent
+weight: 5.5
+weight_unit: lb
+console-ports:
+  - name: console
+    type: rj-45
+power-ports:
+  - name: AC POWER INLET
+    type: iec-60320-c14
+interfaces:
+  - name: FE_5_1
+    type: 100base-tx
+  - name: FE_5_2
+    type: 100base-tx
+  - name: FE_5_3
+    type: 100base-tx
+  - name: FE_5_4
+    type: 100base-tx
+  - name: FE_5_5
+    type: 100base-tx
+  - name: FE_5_6
+    type: 100base-tx
+  - name: FE_5_7
+    type: 100base-tx
+  - name: FE_5_8
+    type: 100base-tx
+  - name: GE_4_1
+    type: 1000base-tx
+  - name: GE_4_2
+    type: 1000base-tx
+  - name: GE_4_3
+    type: 1000base-tx
+  - name: GE_4_4
+    type: 1000base-tx
+  - name: WAN
+    type: 1000base-tx
diff --git a/device-types/Cisco/WS-C2950G-12-EI.yaml b/device-types/Cisco/WS-C2950G-12-EI.yaml
new file mode 100644
index 000000000..af478e426
--- /dev/null
+++ b/device-types/Cisco/WS-C2950G-12-EI.yaml
@@ -0,0 +1,46 @@
+---
+manufacturer: Cisco
+model: Cisco WS-C2950G-12-EI
+slug: cisco-ws-c2950g-12-ei
+part_number: WS-C2950G-12-EI
+u_height: 1
+airflow: side-to-rear
+weight: 3
+weight_unit: kg
+is_full_depth: false
+console-ports:
+  - name: con 0
+    type: rj-45
+power-ports:
+  - name: POWER
+    type: iec-60320-c14
+    maximum_draw: 30
+interfaces:
+  - name: FastEthernet0/1
+    type: 100base-tx
+  - name: FastEthernet0/2
+    type: 100base-tx
+  - name: FastEthernet0/3
+    type: 100base-tx
+  - name: FastEthernet0/4
+    type: 100base-tx
+  - name: FastEthernet0/5
+    type: 100base-tx
+  - name: FastEthernet0/6
+    type: 100base-tx
+  - name: FastEthernet0/7
+    type: 100base-tx
+  - name: FastEthernet0/8
+    type: 100base-tx
+  - name: FastEthernet0/9
+    type: 100base-tx
+  - name: FastEthernet0/10
+    type: 100base-tx
+  - name: FastEthernet0/11
+    type: 100base-tx
+  - name: FastEthernet0/12
+    type: 100base-tx
+  - name: GigabitEthernet0/1
+    type: 1000base-x-gbic
+  - name: GigabitEthernet0/2
+    type: 1000base-x-gbic
diff --git a/device-types/Perle/STS4-D.yaml b/device-types/Perle/STS4-D.yaml
new file mode 100644
index 000000000..02185b151
--- /dev/null
+++ b/device-types/Perle/STS4-D.yaml
@@ -0,0 +1,40 @@
+---
+manufacturer: Perle
+model: IOLAN STS4-D
+slug: perle-iolan-sts4-d
+description: IOLAN STS-D Terminal Server
+part_number: STS4-D
+u_height: 1.0
+is_full_depth: false
+airflow: passive
+weight: 0.77
+weight_unit: lb
+console-server-ports:
+  - name: RS232-1
+    type: rj-45
+    label: RS232-1
+    description: RS232 - Port 1
+  - name: RS232-2
+    type: rj-45
+    label: RS232-2
+    description: RS232 - Port 2
+  - name: RS232-3
+    type: rj-45
+    label: RS232-3
+    description: RS232 - Port 3
+  - name: RS232-4
+    type: rj-45
+    label: RS232-4
+    description: RS232 - Port 4
+power-ports:
+  - name: DC in
+    type: dc-terminal
+    maximum_draw: 5
+    label: DC in
+interfaces:
+  - name: Interface 1
+    type: 100base-tx
+    enabled: true
+    mgmt_only: false
+    label: Interface 1
+    description: LAN Interface