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Item#: N82E16811208021

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

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  • 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

  • Overview
  • Specifications
  • Warranty & Returns
  • Reviews

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

Warranty, Returns, And Additional Information
  • Warranty
  • Limited Warranty period (parts): 1 year
  • Limited Warranty period (labor): 1 year
  • Read full details
  • Return Policies
    • Return for refund within: 30 days
    • Return for replacement within: 30 days
  • This item is covered by's Standard Return Policy.
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