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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 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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  • Daren W.
  • 6/12/2015 8:48:12 AM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsBest Case

Pros: Quite with all fans in place
Runs cool
Works perfectly with the following hardware:
HeatSink and fan - N82E16835103108
Ram - N82E16820231797
850w PSU
Case - N82E16811129180
EVGA GTX 980TI Superclocked ACX cooler
Two areas for SSDs that don't need to be mounted in the 3.5" bays

Cons: none

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

  • Alex M.
  • 5/29/2015 9:16:49 AM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsBuilt Like a Tank!

Pros: This is my 3rd Antec 300 case. My last was the Illusion with 3 blue LED fans (2-120's Front & 140 Top) This is my favorite case of all-time! I paid short money after rebate ($50.00 with $2.99 Shipping) It's heavy & solid. It will fit most mid-high end GPU's length. You still get 1-120mm rear & 1-140mm top fans. They might (not sure)t be sleeve based fans, but they are reliable & quiet. I used Rosewill ROCF-11004 (Hydro-Dynamic Bearing) 120mm for the rest of the slots. These are outstanding fans for the money (when on sale) FILTERS! This is one of the main reasons why I love this case. Not many cases have a front filter (this is where I score the most dust) & the PSU helps as well.

Cons: Not much to complain about. The 2.5 SSD bracket isn't the best, but I purchased a 3.5 adaptor for this for $5.00 & all is well.

Other Thoughts: If you don't need all the flashy lights etc. & want a heavy old school & well built case then the Antec Three Hundred Two is the answer.

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  • Nicholas A.
  • 5/11/2015 5:20:43 PM
  • Tech Level: Average
  • Ownership: less than 1 day
  • Verified Owner

5 out of 5 eggsgood build

Pros: Nice looking case with a solid feel to it. It isn't garish, nor flamboyant. Neither is it gorgeous or slick. Its black, efficient, and simplistic with useful "to the point" attributes.

Extremely quiet with the two included fans on low, more so than my old pc case with "dampening cloth" installed, which cost twice as much, using an i3 and fanless gpu. Cable routing was fantastic, with tons of room behind the motherboard. Building was quick and easy, with only one caveat.

Cons: The mounts for the ssd were a bit troublesome to get situated. I wish I would have bought a PSU with more SATA power connectors, in retrospect.

Other Thoughts: This is my third build since 2008, and that being said I wish I would have just built with a variation of this case for all of those builds. This was easily the most painless case I have ever used to build a computer with. There were no headaches, and I was up and running in a couple hours. Temps are fantastic with a 750ti and i5 4590 with stock cooler, but honestly, I could have put those two into an ITX build and got great results.

I would highly recommend this case to anyone looking to build any type of computer.

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

  • Bobby H.
  • 5/1/2015 11:02:57 PM
  • Tech Level: Average
  • Ownership: less than 1 day
  • Verified Owner

5 out of 5 eggspleasure to work on

Pros: The biggest pro i can put on this case compared to others I have worked on is that this one by far is the most thought out at ease to work with.

It has everything i want/need in a case and even has dust filters. and i do like how the front panel pops out easily by pushing in the tabs and has the hinged mounts on the other side, the side are also mounted similarly.

Cons: The only and I mean only con I see with this case is that one of the 2.5in spots are in a weird position to where you need to mount one before the motherboard. This is not a big deal at all to me but if you plan to switch drives around from case to case get an adapter for the 3.5 slots or put a dedicated one for switching on the bottom position mount location.

Other Thoughts: I'm glad my mind was changed and went for a case that cost a little more than my original plan for a case. money well spent in my mind.

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  • Virgil B.
  • 4/21/2015 4:03:44 PM
  • Tech Level: High
  • Ownership: 1 month to 1 year

4 out of 5 eggsIssue with 3.5 slots and rails

Pros: The case has a bottom mounted power supply. If you mount the supply the way that it was intended then it will draw cool air through the filter on the bottom and then expel the hot air out of the back. The case has cutouts so that the power cabling can be hidden behind the motherboard making for a neatly wired case. The case has plenty of room for mounting hard disks and other devices, but there are some issues as I have listed in the Cons section.

Cons: The second 2.5 inch mount can not be used without removing the motherboard. The disc mounts behind the motherboard and the only way to access the screws is to remove the motherboard. This makes the second 2.5 inch mount impractical to use.

The plastic brackets that are used to lock in the 3.5 inch drives will not work with the 2.5 to 3.5 adapters that come with most SSD drives. The only way that I could make them work was to drill out one screw hole on the bracket and then to drill a new hole through the plastic rail. Then the pen on the bracket will fit into the adapter and you can place a screw into the hole that you drilled into the rail to secure the rail to the 3.5 inch adapter. If you are not handy and have the tools then you have no choice but to use the 2.5 mounts or purchase a 2.5 to 3.5 full sized adapter such as Rosewill RXC200M instead of the small adapter that normally comes with the SSD drive.

Other Thoughts: I hope that someone from Antec is reviewing these comments because one additional hole in the plastic rails won't affect the functionality of the rail and will pretty much solve the issue with the smaller adapters.

The case has two holes in the top of the case towards the rear of the unit. I am assuming that the holes are designed to permit running tubes through the top of the case to a radiator for a water cooled arrangement. I do not see how they could be used on a closed loop water cooler so as far as I am concerned they are simply an eyesore in an otherwise nice case.

All in all, this is a very good case with great airflow and lots of room for all of your hardware. I am so fond of this case design that all I will use is the Antec 300 or the Antec 300 V2.

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  • Randall B.
  • 4/4/2015 4:43:52 PM
  • Tech Level: Somewhat High
  • Ownership: less than 1 day

3 out of 5 eggsAntec 300 case

Pros: I don't know about these newer cases. The two I do own are 4yrs.old and have 4 120mm fans and a 140mm top hat come stock. Good air flow and front filter to keep an o/c Qx9650 and 2 4870x2's in cf cool back in the day. Still use 'em. Looking at one now for a new build.

Cons: 3 less fans... same price. Really?

Other Thoughts: Have owned Antec cases from back in the day since the 40lb. SX800/830 that came with a 300w ps. And before that. Don't remember the model number Always great airflow and ez to work on.

1 out of 2 people found this review helpful. Did you? Yes No

  • Thomas H.
  • 3/26/2015 7:35:50 AM
  • Tech Level: Somewhat High
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsSatisfied!!!

Pros: Good Mid-Tower for the build I was doing. Product shipped from Action Packaged Inc. and was delivered on time well before my other components with out issue. I even received an email from my order manager at Action Packaged Inc making sure everything was good.

Cons: None!

Other Thoughts: Very pleased with the service from Action Packaged Inc.

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  • Kenneth J.
  • 3/20/2015 2:43:39 PM
  • Tech Level: High
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsThe perfect case

Pros: I have built many computers in the past 8 years, and this is the best case I have ever used.
Simple, very roomy, easy to have clean wiring, extra case fan behind cpu, front usb 3.0, the HDD drives are side ways (personal preference). no annoying lights,

Cons: These could be cons for some, but I think they are all pros. (personal preference)
Bottom mounted power supply,
sideways HDD drives
no side window.
Again, i think these are all pros, but you might not like them.

Other Thoughts: Ive used many good cases in the past, but if I were to design a case by taking all the things I like about all of the cases ive used, this would be the case I would choose. Everything Ive ever like in a case, this one has. Its simple, nice, rugged, has filters, plenty of room, can add plenty of fans, can route wires under the motherboard, finger grip screws used to take off the side. I really can't think of any way to make this case better. I got it on sell for like $65, and when the case arrived I checked my receipt because I couldn't believe I got this good of a deal on this case.

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  • Aaron H.
  • 2/27/2015 2:41:44 PM
  • Tech Level: High
  • Ownership: more than 1 year

1 out of 5 eggswtb support and parts

Pros: It's a great case, comes with a couple fans and has room for more, plenty of room to work in and a removable drive cage for extra long cards. Easy to get in and out of, all toolless drive bays and side panels. Almost all you can ask for in a mid-tower case.

Cons: There isn't any support. At all. I broke one of the USB connectors, no issue I thought, should be able to get a new connector. I go to the website and the page for the part says it isn't available, so I open a ticket and get back a reply wanting my invoice, thing is I've had this thing for a while and don't have the reciept anymore so I was told to phone them. I call this number, and the first time it just hangs up because none of the automated options equate to 'i want to order a part' and the second time I call I just pick one and it puts me on hold and after 30 minutes still nobody answers.

This is garbage support when I should be able to just order the part online, the web support can't handle everything, and the phone just puts you on perpetual hold. I cannot recommend Antec, and will not buy another Antec product.

1 out of 6 people found this review helpful. Did you? Yes No

  • Vince V.
  • 1/5/2015 1:42:58 PM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month
  • Verified Owner

4 out of 5 eggsGood bare bones case

Pros: Good looking metal case. Very sturdy and lots of room inside. Items easy to get at and install. No flashy lights or gimmicks. Used to build NLE/Video Capture computer.

Cons: 2.5" drive bays do not leave a lot of room for wires to attach to devices, especially the one on the side. There is no adapter for 3.5" devices in the 5.25" drive bay. I needed to order an aftermarket adapter to get a multi-card reader to fit.

Other Thoughts: This case is an excellent value, however, be aware that there are only 2 cooling fans with the case so beware of cooling issues with some processors. Antec does not seem to make a 3.5" adapter for the 5.25" drive bays, so if you are installing a device that needs to accessed externally you'll need to get an aftermarket adapter.

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Item#: N82E16811129180
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