Kelvin T12 Kelvin S24 Kelvin S36 Restrictions
Arc Midi Rear
Bottom (1)
Top		 Top - (1) Limits the PSU length to 160mm
Arc Midi R2 Front (1)
Rear
Bottom (3)
Top		 Front (1)(2)
Top		 - (1) Requires removal of the upper HDD cage.
(2) Requires removal or repositioning of the lower HDD cage.
(3) Limits the PSU length to 160mm
Arc Mini Rear
Top		 Top -
Arc Mini R2 Front (1)
Rear
Bottom (2)(3)
Top		 Front (1)(3)(4)
Top		 Top (4) (1) Requires removal of the upper HDD cage.
(2) Limits the PSU length to 155mm
(3) Requires removal or repositioning of the lower HDD cage.
(4) Requires removal of the ODD cage
Arc XL Front (1)(2)
Rear
Bottom
Top		 Front (1)(2)
Top		 Top (1) Requires removal of the upper HDD cage.
(2) Requires removal or repositioning of the lower HDD cage.
Core 1000
Core 1000 USB 3.0		 Front (1) - - (1) Can only be used together with 2.5″ Storage units.
Core 1100

Front (1)

 - -

(1) Can only be used together with 2.5″ Storage units.
Core 1300 Front
Rear
Bottom		 Front (1)
Top (2)(3)		 - (1) Prevents the use of the lower ODD position.
(2) Prevents the use of the top ODD position.
(3) Height of components on the motherboard limited to 35mm along the top edge.
Core 1500 Front (1)
Rear
Bottom (2)		 Front (1)(2)(3)
Top (4)(5)		 - (1) Requires removal of the top HDD cage.
(2) Requires removal of the bottom HDD cage.
(3) Prevents the use of the lower ODD position.
(4) Prevents the use of the top ODD position.
(5) Height of components on the motherboard (typically memory modules) limited to 35mm along the top edge.
Core 2300 Front
Rear
Bottom		 Front
Top (1)(2)		 - (1) Prevents the use of the top ODD position.
(2) Height of components on the motherboard (typically memory modules) limited to 35mm along the top edge.
Core 2500 Front (1)
Rear
Bottom (2)		 Front (1)(2)(3)
Top (4)(5)		 - (1) Requires removal of the top HDD cage.
(2) Requires removal of the bottom HDD cage.
(3) Prevents the use of the lower ODD position.
(4) Prevents the use of the top ODD position.
(5) Height of components on the motherboard (typically memory modules) limited to 35mm along the top edge.
Core 3000
Core 3000 USB 3.0		 Rear
Bottom (1)		 - - (1) Limits the PSU length to 140mm
Core 3300 Front
Rear
Bottom (1)
Top (2)		 Front
Top (2)		 - (1) Limits the PSU length to 160mm 
(2) Height of components on the motherboard (typically memory modules) limited to 35mm along the top edge.
Core 3500 Front (1)
Rear
Bottom (2)
Top (3)		 Front (1)
Top (3)		 - (1) Requires removal or repositioning of the lower HDD cage.
(2) Limits the PSU length to 160mm 
(3) Height of components on the motherboard (typically memory modules) limited to 35mm along the top edge.
Define Mini Rear - -
Define R2 Rear
Bottom (1)		 - - (1) Limits the PSU length to 160mm
Define R3
Define R3 USB 3.0		 Rear
Bottom (1)		 - - (1) Limits the PSU length to 160mm
Define R4 Front (1)
Rear
Bottom (2)		 Front (1)(3)(4)
Top (5)		 - (1) Requires removal of the upper HDD cage.
(2) Limits the PSU length to 160mm 
(3) Requires removal or repositioning of the lower HDD cage.
(4) Can only be fastened with 4 out of 8 screws.
(5) Height of components on the motherboard (typically memory modules) limited to 35mm along the top edge.

Define R5

Front (1)

Rear

Bottom (2)

Top

Front (1)(3)

Bottom (2)(3)

Top

 Front (1)(4)
Top (1)(3)(4)

(1) Requires removal of the upper HDD cage.

(2) Limits the PSU length to 165mm

(3) Requires removal or repositioning of the lower HDD cage.

(4) Requires removal of the ODD cage.
Define S Front

Rear 
Bottom (1)

Top

 Front 

Top

 Front
Top

(1) Limits the PSU length to 160mm

Define XL R2

Front (1)(2) 
Rear 
Bottom 
Top

Front (1)(2) 
Top

 -

(1) Requires removal of the upper HDD cage. 
(2) Requires removal or repositioning of the lower HDD cage.
Node 304 Rear - -
Node 605 - - -
Node 804 Front, Left chamber (1)

Front, Right chamber (4)
Rear, Right chamber (2)
Top, Right chamber (5)		 Front, Left chamber (3)
Top, Left chamber

Front, Right chamber(4)
Top, Right chamber (5)		 - (1) Limits the space for graphics cards to 240mm.
(2) Requires removal or repositioning of the rear HDD cage.
(3) Limits the space for graphics cards to 260mm.
(4) Requires removal of the front HDD cage.
(5) Requires removal of both HDD cages, one may be repositioned to the bottom panel.