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Item#: N82E16811129180

Antec Three Hundred Two Black Steel ATX Mid Tower Computer Case with Upgraded 2 x USB 3.0

  • Steel ATX Mid Tower
  • 2 x USB 3.0, Audio In/Out Front Ports
  • 3 External 5.25" Drive Bays
  • 6 Internal 3.5" Drive Bays
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Antec Black Steel ATX Mid Tower Computer Case

The team that brought you the Three Hundred is back with an enclosure designed to handle today and tomorrow's high-performance systems. Introducing the Three Hundred Two, the next standard in affordable gaming cases. Our newest chassis is built for gamers from the inside-out, from its aggressive front bezel, to its advanced cooling system. The Three Hundred Two is the rightful heir to the Gaming Series legacy.




To ensure that heat won't be a problem, the Three Hundred Two offers a rear 120mm TwoCool™ fan and a top 140mm TwoCool™ fan with four optional fans. It also features a side 120mm fan mount to cool graphics cards and another 120mm fan mount behind the motherboard try to help dissipate heat buildup. For maximum flexibility, top water cooling grommets are included for a custom water loop option and an enlarged CPU cutout.


Less Maintenance and More Gaming

Comes with total of nine tool-less 5.25" & 3.5" drive bays with two dedicated SSD mounts, a large cable management compartment, and two front panel USB 3.0 ports with an internal connector makes installation a 1-2 step. The Three Hundred Two also takes advantage of the cable routing holes behind the motherboard tray, making cable management a breeze. It can support a maximum graphics card length of 12.5" (318mm) and a removable, washable PSU air filter and front intake filter to top it off.


Antec Antec Antec Antec


Model Three Hundred Two
UPC 0-761345-15320-1
Unit Dimensions (H x W x D) 20.2 x 9 x 18.5" (513 x 229 x 471mm)
Package Dimensions (H x W x D) 22.2 x 11.4 x 20.7" (565 x 290 x 525mm)
Maximum Video Card Size 12.5" (318mm) maximum video card size
Case Type Mid-Tower
Front Ports Two USB 3.0 with internal motherboard connector • Audio In/Out
Cooling SystemCase Type
  • One 120mm rear TwoCool™ fan
  • One 140mm top TwoCool™ fan
  • Two 120mm front intake fans (optional)
  • One 120mm side intake fan (optional)
  • One 120mm side exhaust fan behind motherboard (optional)
Drive Bays
  • Three 5.25" tool-less drive bays
  • Two 2.5" drive bays (dedicated)
  • Six 3.5" tool-less drive bays
Motherboard Support Standard ATX, microATX, Mini-ITX
CPU Cutout Enlarged CPU Cutout
Color(s) Black
  • Net Weight 15.3 lbs (6.9kg)
  • Gross Weight 18.7 lbs (8.5kg)
Expansion Slots 8 expansion slots

Learn more about the Antec Three Hundred Two

Quick Info


  • Limited Warranty period (parts): 3 years
  • Limited Warranty period (labor): 3 years

Customer Reviews of the Antec Three Hundred Two

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  • Anonymous
  • 10/2/2014 10:53:25 PM
  • Tech Level: High
  • Ownership: more than 1 year

5 out of 5 eggsGreat Desktop Chassis

Pros: I have a number of these for office computers

Cons: The fan on top is a bit annoying, as far as placement since users like to lay things on top of the towers.

Other Thoughts: Great little computer chassis for business

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

  • David D.
  • 9/23/2014 8:31:40 AM
  • Tech Level: High
  • Ownership: 1 day to 1 week
  • Verified Owner

3 out of 5 eggsdamaged

Pros: These improvements to the Antec 300, such as, front panel USB 3.0 and tool less optical drive installation really stepped up the game for this mid tower computer case. Now if you could throw in a few blue led fans for the front we can make this the new Illusion case.

Cons: Shipping: the box was stabbed... looks like a small forklift whole that went into the case and bent the front grill at the bottom lower edge... I took 2 eggs off for the ding and please have antec send me a new front grill....I can't deliver the case to my customer with a ding on the front grill.

Other Thoughts: customer rebuild antec 300 case, amd quad core cpu, 16 gig of memory, powercolor radeon 6970, gigabyte 990fx ud3 motherboard,corsair 860watt power supply. Blue ray by LG. All parts from Newegg.

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

  • John D.
  • 9/12/2014 7:19:06 AM
  • Tech Level: Average
  • Ownership: 1 month to 1 year
  • Verified Owner

4 out of 5 eggsAwesome case

Pros: Lots of building room, many HDD bays, very nice cable management and it looks freakin' cool to boot. I especially love the tool-less design of the drive bays. Very clean.

Cons: Not really a con for me, but the case may be a bit bigger than the preview pics let on. Also the reset button is pretty small, but that may be on purpose so someone doesn't accidentally bump it maybe? What does irk me about this case though is the blue power LED is a bit intense, which sucks when you have your computer in your bedroom and you're trying to sleep while it's on standby. The spot for the power supply was also kind of tight. Putting my S12G in was a pain in the behind.

Other Thoughts: This is my first real case. Was building out of an old Compaq case before this one. If I had to compare the two... The Three Hundred Two is like packing the trunk of roomy SUV, while my old case was like trying to stuff a whole loaf of bread into a rusty soup can...

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  • Jon M.
  • 7/16/2014 7:28:14 AM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month
  • Verified Owner

4 out of 5 eggsInexpensive, Love the Cable Management

Pros: Inexpensive; USB 3.0 front panel inputs; spacious for a mid-tower; neat cable management; CPU back access for water cooling plate.

Cons: Not enough motherboard screws included - only 8 included and 9 required for ATX board, come on Antec!
Only 2 case fans.

Other Thoughts: Knocked off a egg because I had to scrounge around to find one more motherboard screw. Otherwise, I like the case, especially the cable management feature which keeps my build clean and neat. 2 case fans included seems inadequate if they call this a gaming case.

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  • Stan K.
  • 7/13/2014 2:54:29 PM
  • Tech Level: Somewhat High
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsAntec 302 Great case

Pros: Made a little wider than the Antec 300 for better cable management

Cons: Comes without the front bay fans that the 300 came with as standard

Other Thoughts: A great case for any size m/b

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  • Randy G.
  • 7/1/2014 9:18:47 PM
  • Tech Level: Somewhat High
  • Ownership: less than 1 day

5 out of 5 eggsgood case

Pros: big case work lots of room
two quiet fans included
"toolless" install mostly
looks pretty freakin cool
front usb 3
area for cable management.

Cons: power button is missing a piece?

Other Thoughts: I like everything about the case so far. the "complaint" is that no matter how far I push in the power button the pc won't turn on. I have to open the side and remove the front panel and push the switch to turn it on. not a huge problem as the system rarely gets turned off, but it's still an inconvenience.

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  • 7/1/2014 10:38:54 AM
  • Tech Level: Somewhat High
  • Ownership: more than 1 year

4 out of 5 eggsLarge Case, Begs For Lotsa HDDs

Pros: I maintain dozens of these among users, all max-filled with HDDs and this case gives those the most spacious spacing between drives, allowing the best air-flow from the front-mounted fans.

Substantial construction.

Cons: Substantial construction also means "heavy" and "large", which can be a negative for lugging around.

The case's drive-bays don't allow drives to be flipped for inserting - you can only install HDDs 'cables-in / nose out' which means to work on HDDs, you must pull the case out and remove both panels. The case is spacious enough for this, but the designer didn't see fit to use this wonderful consideration. I take points off for that lack of imagination OR lack of usefuless experience. Move 10 of these cases in a day JUST to access both panels, and it becomes an obvious drawback, compared to a certain Fractal case.

Other Thoughts: This is a Top 3 Case for users that need a lot of hard-drives - Fractal Arc Midi R2 allows drives to be inserted 'in' or out making a much easier drive-SATA-Cable maint routine. The CoolerMaster N400 has the old-style drive-cage but it has such substantial spacing that drive-maint is an ease. But this Antec 302 has the best between-drive air-spacing.

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

  • bradley m.
  • 4/29/2014 6:03:53 PM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggssmall(er) case good options

Pros: This is the second of two Antec Three Hundred Two Black Steel ATX mid tower computer cases I have picked up over the last two months.

This computer case was easy to setup, good cable management for the price, cut out on tray for back access to CPU for folks installing oversize CPU coolers. The snap in / screw less mounting of the rails seems to work fine.

Cons: What was missing was the instruction guide. This did cause some issues dealing with the secondary support bracket for the motherboard PCI cards. Once I figured out I had to remove that plate to install the video card the rest of the build was easy.

Other Thoughts: I was not able to flip the case fans around to change the flow of air due to binding issues. Once I re-installed the fans back to factory default location they worked as designed. There could be a bit more room by offsetting the internal hard drive rails to allow a bit more room to fit power / SATA cables that have stiffer connectors.

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  • Shawn W.
  • 4/26/2014 9:14:26 PM
  • Tech Level: Average
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsBest case I've had in a long time.

Pros: Lovely black case.
Wire housing to improve air flow.
Many fan in/outputs with the option of water cooling.
USB 3.0.

Cons: Adding more fans may increase the noise you get from it.
The metal used to make the case feels a bit on the cheap end.

Other Thoughts: This case by far is the best case iv'e had in a long time, the one i upgraded from looked great, but had very poor air flow and it cause things to be slightly on the toasty side, which I didn't like. If your on a budget but need more more airflow in your computer i would say get it.

Still waiting to see how it fairs in 90 F or higher weather this coming Summer will update, if i can.

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  • Anonymous
  • 4/18/2014 11:03:48 AM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggssweet

Pros: Decently priced case, tons of room for cabling!

Cons: I ordered this thinking i was gonna get a Antec Three Hundred size case. This new model is significantly wider.

the SSD mounting on the bottom of the case is in a weird spot and you will have to force your sata cables into an almost 90* bend configuration. if you have low quality sata cables this could be a problem.

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Item#: N82E16811129180
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