diff --git a/device-types/Extreme Networks/715W_AC_PSU_FB.yaml b/device-types/Extreme Networks/715W_AC_PSU_FB.yaml
new file mode 100644
index 000000000..225c22c83
--- /dev/null
+++ b/device-types/Extreme Networks/715W_AC_PSU_FB.yaml	
@@ -0,0 +1,13 @@
+---
+manufacturer: Extreme Networks
+model: 715W AC PSU FB
+slug: 715w-ac-psu-fb
+part_number: '10951'
+u_height: 0
+is_full_depth: false
+subdevice_role: child
+comments: ''
+power-ports:
+  - name: PSU
+    type: iec-60320-c14
+    maximum_draw: 715
diff --git a/device-types/Extreme Networks/X460-G2-24t-10GE4.yaml b/device-types/Extreme Networks/X460-G2-24t-10GE4.yaml
new file mode 100644
index 000000000..19a83e6b9
--- /dev/null
+++ b/device-types/Extreme Networks/X460-G2-24t-10GE4.yaml	
@@ -0,0 +1,128 @@
+---
+manufacturer: Extreme Networks
+model: X460-G2-24t-10GE4
+slug: x460-g2-24t-10ge4
+part_number: '16701'
+u_height: 1
+is_full_depth: false
+subdevice_role: parent
+comments: ''
+console-ports:
+  - name: Console
+    type: rj-45
+interfaces:
+  - name: '1'
+    type: 1000base-t
+    mgmt_only: false
+  - name: '2'
+    type: 1000base-t
+    mgmt_only: false
+  - name: '3'
+    type: 1000base-t
+    mgmt_only: false
+  - name: '4'
+    type: 1000base-t
+    mgmt_only: false
+  - name: '5'
+    type: 1000base-t
+    mgmt_only: false
+  - name: '6'
+    type: 1000base-t
+    mgmt_only: false
+  - name: '7'
+    type: 1000base-t
+    mgmt_only: false
+  - name: '8'
+    type: 1000base-t
+    mgmt_only: false
+  - name: '9'
+    type: 1000base-t
+    mgmt_only: false
+  - name: '10'
+    type: 1000base-t
+    mgmt_only: false
+  - name: '11'
+    type: 1000base-t
+    mgmt_only: false
+  - name: '12'
+    type: 1000base-t
+    mgmt_only: false
+  - name: '13'
+    type: 1000base-t
+    mgmt_only: false
+  - name: '14'
+    type: 1000base-t
+    mgmt_only: false
+  - name: '15'
+    type: 1000base-t
+    mgmt_only: false
+  - name: '16'
+    type: 1000base-t
+    mgmt_only: false
+  - name: '17'
+    type: 1000base-t
+    mgmt_only: false
+  - name: '18'
+    type: 1000base-t
+    mgmt_only: false
+  - name: '19'
+    type: 1000base-t
+    mgmt_only: false
+  - name: '20'
+    type: 1000base-t
+    mgmt_only: false
+  - name: '21'
+    type: 1000base-x-sfp
+    mgmt_only: false
+    description: Combo Port (either SFP or 1000BASE-T)
+  - name: '22'
+    type: 1000base-x-sfp
+    mgmt_only: false
+    description: Combo Port (either SFP or 1000BASE-T)
+  - name: '23'
+    type: 1000base-x-sfp
+    mgmt_only: false
+    description: Combo Port (either SFP or 1000BASE-T)
+  - name: '24'
+    type: 1000base-x-sfp
+    mgmt_only: false
+    description: Combo Port (either SFP or 1000BASE-T)
+  - name: '25'
+    type: 1000base-x-sfp
+    mgmt_only: false
+  - name: '26'
+    type: 1000base-x-sfp
+    mgmt_only: false
+  - name: '27'
+    type: 1000base-x-sfp
+    mgmt_only: false
+  - name: '28'
+    type: 1000base-x-sfp
+    mgmt_only: false
+  - name: '29'
+    type: 10gbase-x-sfpp
+    mgmt_only: false
+  - name: '30'
+    type: 10gbase-x-sfpp
+    mgmt_only: false
+  - name: '31'
+    type: 10gbase-x-sfpp
+    mgmt_only: false
+  - name: '32'
+    type: 10gbase-x-sfpp
+    mgmt_only: false
+  - name: '33'
+    type: other
+    mgmt_only: false
+    description: either Stacking-Ports or additional SFP+; only with VIM-2 module
+  - name: '34'
+    type: other
+    mgmt_only: false
+    description: either Stacking-Ports or additional SFP+; only with VIM-2 module
+  - name: Mgmt
+    type: 1000base-t
+    mgmt_only: true
+device-bays:
+  - name: PSU-1
+  - name: PSU-2
+  - name: VIM-2
diff --git a/device-types/Extreme Networks/X460-G2-48p-10GE4.yaml b/device-types/Extreme Networks/X460-G2-48p-10GE4.yaml
new file mode 100644
index 000000000..2d54cb4e3
--- /dev/null
+++ b/device-types/Extreme Networks/X460-G2-48p-10GE4.yaml	
@@ -0,0 +1,184 @@
+---
+manufacturer: Extreme Networks
+model: X460-G2-48p-10GE4
+slug: x460-g2-48p-10ge4
+part_number: '16704'
+u_height: 1
+is_full_depth: true
+subdevice_role: parent
+comments: ''
+console-ports:
+  - name: Console
+    type: rj-45
+interfaces:
+  - name: '1'
+    type: 1000base-t
+    mgmt_only: false
+  - name: '2'
+    type: 1000base-t
+    mgmt_only: false
+  - name: '3'
+    type: 1000base-t
+    mgmt_only: false
+  - name: '4'
+    type: 1000base-t
+    mgmt_only: false
+  - name: '5'
+    type: 1000base-t
+    mgmt_only: false
+  - name: '6'
+    type: 1000base-t
+    mgmt_only: false
+  - name: '7'
+    type: 1000base-t
+    mgmt_only: false
+  - name: '8'
+    type: 1000base-t
+    mgmt_only: false
+  - name: '9'
+    type: 1000base-t
+    mgmt_only: false
+  - name: '10'
+    type: 1000base-t
+    mgmt_only: false
+  - name: '11'
+    type: 1000base-t
+    mgmt_only: false
+  - name: '12'
+    type: 1000base-t
+    mgmt_only: false
+  - name: '13'
+    type: 1000base-t
+    mgmt_only: false
+  - name: '14'
+    type: 1000base-t
+    mgmt_only: false
+  - name: '15'
+    type: 1000base-t
+    mgmt_only: false
+  - name: '16'
+    type: 1000base-t
+    mgmt_only: false
+  - name: '17'
+    type: 1000base-t
+    mgmt_only: false
+  - name: '18'
+    type: 1000base-t
+    mgmt_only: false
+  - name: '19'
+    type: 1000base-t
+    mgmt_only: false
+  - name: '20'
+    type: 1000base-t
+    mgmt_only: false
+  - name: '21'
+    type: 1000base-t
+    mgmt_only: false
+  - name: '22'
+    type: 1000base-t
+    mgmt_only: false
+  - name: '23'
+    type: 1000base-t
+    mgmt_only: false
+  - name: '24'
+    type: 1000base-t
+    mgmt_only: false
+  - name: '25'
+    type: 1000base-t
+    mgmt_only: false
+  - name: '26'
+    type: 1000base-t
+    mgmt_only: false
+  - name: '27'
+    type: 1000base-t
+    mgmt_only: false
+  - name: '28'
+    type: 1000base-t
+    mgmt_only: false
+  - name: '29'
+    type: 1000base-t
+    mgmt_only: false
+  - name: '30'
+    type: 1000base-t
+    mgmt_only: false
+  - name: '31'
+    type: 1000base-t
+    mgmt_only: false
+  - name: '32'
+    type: 1000base-t
+    mgmt_only: false
+  - name: '33'
+    type: 1000base-t
+    mgmt_only: false
+  - name: '34'
+    type: 1000base-t
+    mgmt_only: false
+  - name: '35'
+    type: 1000base-t
+    mgmt_only: false
+  - name: '36'
+    type: 1000base-t
+    mgmt_only: false
+  - name: '37'
+    type: 1000base-t
+    mgmt_only: false
+  - name: '38'
+    type: 1000base-t
+    mgmt_only: false
+  - name: '39'
+    type: 1000base-t
+    mgmt_only: false
+  - name: '40'
+    type: 1000base-t
+    mgmt_only: false
+  - name: '41'
+    type: 1000base-t
+    mgmt_only: false
+  - name: '42'
+    type: 1000base-t
+    mgmt_only: false
+  - name: '43'
+    type: 1000base-t
+    mgmt_only: false
+  - name: '44'
+    type: 1000base-t
+    mgmt_only: false
+  - name: '45'
+    type: 1000base-t
+    mgmt_only: false
+  - name: '46'
+    type: 1000base-t
+    mgmt_only: false
+  - name: '47'
+    type: 1000base-t
+    mgmt_only: false
+  - name: '48'
+    type: 1000base-t
+    mgmt_only: false
+  - name: '49'
+    type: 10gbase-x-sfpp
+    mgmt_only: false
+  - name: '50'
+    type: 10gbase-x-sfpp
+    mgmt_only: false
+  - name: '51'
+    type: 10gbase-x-sfpp
+    mgmt_only: false
+  - name: '52'
+    type: 10gbase-x-sfpp
+    mgmt_only: false
+  - name: '53'
+    type: other
+    mgmt_only: false
+    description: either Stacking-Ports or additional SFP+; only with VIM-2 module
+  - name: '54'
+    type: other
+    mgmt_only: false
+    description: either Stacking-Ports or additional SFP+; only with VIM-2 module
+  - name: Mgmt
+    type: 1000base-t
+    mgmt_only: true
+device-bays:
+  - name: PSU-1
+  - name: PSU-2
+  - name: VIM-2
diff --git a/device-types/Extreme Networks/X460-G2_VIM-2x.yaml b/device-types/Extreme Networks/X460-G2_VIM-2x.yaml
new file mode 100644
index 000000000..72088b53e
--- /dev/null
+++ b/device-types/Extreme Networks/X460-G2_VIM-2x.yaml	
@@ -0,0 +1,16 @@
+---
+manufacturer: Extreme Networks
+model: X460-G2 VIM-2x
+slug: x460-g2-vim-2x
+part_number: '16711'
+u_height: 0
+is_full_depth: false
+subdevice_role: child
+comments: ''
+interfaces:
+  - name: '33'
+    type: 10gbase-x-sfpp
+    mgmt_only: false
+  - name: '34'
+    type: 10gbase-x-sfpp
+    mgmt_only: false