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XION > 
Item#: N82E16811208021

XION Onyx XON-303 Black/Blue Steel ATX Mid Tower Computer Case

  • Steel ATX Mid Tower
  • 2 x USB2.0 ; 2 x Audio Front Ports
  • 4 External 5.25" Drive Bays
  • 5 Internal 3.5" Drive Bays
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Xion made the Onyx XON-303 case with all the options included, all the requirements exceeded, and the price a knockout. They started with the basic option that most cases skimp on, the fans. The designers went big for maximum air flow with a 120mm intake fan up front, and another 120mm exhaust fan in the rear. Not content with that though, a 140mm blue LED fan was mounted on the side panel window to breathe relief directly onto the motherboard.

Up front wasn't forgotten either, with the spacious four 5.25" and two 3.5" external drive bays, all protected with style behind their door. Inside is just as impressive with a massive five bays for the internal hard drives. After that the only thing missing is the most important, durability. And there will be no doubt that it wasn’t forgotten when you feel the stability of its steel construction.

  • newegg Excellent Expandability with 11 Drive Bays Boasting four external 5.25" drive bays, two external and up to five internal 3.5" drive bays, the XION Onyx XON-303 provides superb expandability.
  • newegg Optimal Airflow The XION Onyx XON-303 features two 120mm fans at both the front and rear to construct the optimal airflow passage through your case. One 140mm side fan with VGA card vent delivers even greater system cooling performance.
  • newegg Transparent Side Panel Window The XION Onyx XON-303's fantastic transparent side panel window provides a direct view of the inner system.
  • newegg Convenient Side I/O Panel The convenient side I/O panel enables easy access to two USB 2.0 ports and two audio ports.

Learn more about the XION XON-303

Model

Brand
XION
Series
Onyx
Model
XON-303

Spec

Type
ATX Mid Tower
Color
Black/Blue
Case Material
Steel
With Power Supply
No
Power Supply Mounted
Top
Motherboard Compatibility
ATX. Micro ATX
With Side Panel Window
Yes

Expansion

External 5.25" Drive Bays
4
External 3.5" Drive Bays
2
Internal 3.5" Drive Bays
5
Expansion Slots
7

Front Ports

Front Ports
2 x USB2.0 ; 2 x Audio

Cooling System

80mm Fans
No
120mm Fans
1 x 120mm Black Front Fan, 1 x 120mm Black rear Fan
140mm Fans
1 x 140mm Blue LED Fan
Side Air duct
No

Physical Spec

Dimensions
20.3'' x 8.1'' x 17.5''

Features

Features
Unique XION Stylish Front Panel and Power Switch design, Front Air Vent for Heat Conduction.
Silent 140mm LED Fans improve airflow inside the case.

Manufacturer Warranty

Parts
1 year limited
Labor
1 year limited

Quick Info

Warranty

  • Limited Warranty period (parts): 1 year
  • Limited Warranty period (labor): 1 year


Customer Reviews of the XION XON-303

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  • Steven S.
  • 7/14/2009 7:32:19 AM
  • Tech Level: Average
  • Ownership: 1 week to 1 month
  • Verified Owner

4 out of 5 eggsPretty but Inconvenient

Pros: nice looking case, the visual design and lighting is very pleasing
Alot of room on the inside

Cons: Lack of additional fan addition spots
the power on, reset, DVD can only be accessed by opening the front panel, kind of inconvenient

Other Thoughts: Meow, Kitties need lovez <3

0 out of 1 people found this review helpful. Did you? Yes No

  • David S.
  • 5/17/2009 8:58:43 PM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggs

Pros: Very impressive case. The door on the front is very sturdy and the LED fan on the side is just the right brightness. The front intake fan is well hidden and directs air right onto my radeon 4870, which despite being somewhat large fits nicely with room to go crossfire later on. Unlike many cases in this price range, their were no sharp edges to slice yourself on, and the blue LEDs on the front are a nice touch(again, just the right brightness).

Cons: Although i did mention the front door being sturdy, it is closed by a latch. And no matter how well built a latching mechanism is, it will eventually break . I would have preferred a magnet to a latch, but magnets can break also, so i guess this is just a personal preference. Only two usb ports on the front.

Other Thoughts: Well designed, sturdy with plenty of airflow and room to expand. With an instant discount and a rebate this is a steal. Great case overall.

Did you find this review helpful? Yes No

  • Floyd N.
  • 5/3/2009 8:54:33 AM
  • Tech Level: High
  • Ownership: more than 1 year

5 out of 5 eggsawesomeness

Pros: sturdy, high quality construction, extremely effective cooling, its big enough that you could put pretty much anything in it you wanted to

Cons: doesn't come with a power supply - not really a con for me, i already had one

Other Thoughts: its big. i had to take the feet off of the bottom so it would fit where I wanted it.

Did you find this review helpful? Yes No

  • David A.
  • 4/27/2009 1:20:11 PM
  • Tech Level: Average
  • Ownership: 1 week to 1 month

4 out of 5 eggsNot what I ordered

Pros: The large fan on the side of the case blows right onto my i7 cpu on a P6T motherboard, keeping room temperature air on the heat sink. Plenty of room for a BFG nVidia 9800 GTX+. One additional place with premade holes for a fan to blow on PCIe crads. Good front to back airflow case fans as well.

Cons: The only addition I would like to see is a pre-drilled place to mount a fan blowing onto the RAM if you run 6 sticks of triple channel ram. The fit really close on the board and would need additional cooling.

Other Thoughts: I ordered XON-403 but this was delivered instead. I was disappointed at first, but it turns out I got a better case for a lower price.

Did you find this review helpful? Yes No

  • Anthony C.
  • 4/26/2009 3:24:07 PM
  • Tech Level: High
  • Ownership: more than 1 year
  • Verified Owner

4 out of 5 eggsStill Kicking

Pros: Mid price case, Blue LED's, Comes with ok fans. After 2 years the case is still good no broken door or any broke plastic.

Cons: Front panel had a short and tried to melt lol, After 2 years the fans make a lot of noise but thats understandable. 1 Fan has failed.

Other Thoughts: Bought this case 6-21-07 its been a good case! Gonna sell it now to get a HTPC its just 2 big being a full ATX case. I need something the size of a dvd player lol. I am selling it on a popular auction site for the next 2 days after this review lol

0 out of 1 people found this review helpful. Did you? Yes No

  • Anonymous
  • 4/9/2009 6:10:33 AM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsImpressive Quality for the Price

Pros: Higher quality than I expected. I have built several machines with similar cases. The construction was good, the mobo mount screws didn't strip out. Very quet 120mm fans. My wife complained because she thought it was broken because she couldn't hear it run. Lights look nice.

Cons: Drive bay metal panels were a bit difficult to remove. No eggs off though, i'd rather they were tough than too easy. Case paperwork was lacking to say the least.

Other Thoughts: Not a good case for first time builders due to the lack of paperwork. reversing power switch leads can do bad things to your mobo, and there is no reference material for them.

Did you find this review helpful? Yes No

  • Anonymous
  • 4/5/2009 4:05:19 PM
  • Tech Level: Average
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsCOOL!

Pros: The side fan is nice because it blows out the air coming from the processor's fan =).

Cons: None

Other Thoughts: None

0 out of 1 people found this review helpful. Did you? Yes No

  • Anonymous
  • 4/3/2009 10:38:38 AM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsHuge!

Pros: I have not had a problem with this case yet. Everything I have put into did not have a problem. The airflow is great... only have stock cpu fan and gpu fan each at a relatively low temp. (29C)

Cons: The rebate will not be granted. Have been trying to get it but they will not give it to me. I would buy from then again but only if a rebate is not included.

Other Thoughts: The case is not tool less so do not buy if u want tool less. The side mic, headphone and usbs work great but need an audio usb on motherboard to use mic and headhone.

Did you find this review helpful? Yes No

  • Anonymous
  • 3/25/2009 4:16:00 PM
  • Tech Level: Somewhat High
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsVery Well built!

Pros: This case is really good! I had did alot of homework when I was shopping for a case for my first pc build and this one had everything I was looking for and more. The case itself has really good air flow. Lots of space! Everything fits. The PCI panals and the CD Bay panals are all tooless. The 140mm LED fan is great too, lights up everything and is quieter than I expected! IF you're building on a budget you can't go wrong with this case!

Cons: Door is a bit hard to open than it should. The side Mic and Audio ports I have yet to get to work.

Other Thoughts: Great case =]

Did you find this review helpful? Yes No

  • Chinedu K.
  • 3/25/2009 11:58:55 AM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggs

Pros: great looking case with LED's and all.

Cons: Wish there was a wire management system installed because it is a pretty big mid tower.

Did you find this review helpful? Yes No

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Computer Cases > 
Computer Cases > 
XION > 
Item#: N82E16811208021
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