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Antec ISK 300-150 Black Mini-ITX Desktop Computer Case 150 Watt Power Supply

3.9 3.9 out of 5 stars 133 ratings

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We don't know when or if this item will be back in stock.
ISK Series
Brand Antec
Motherboard Compatability ATX
Case Type Desktop
Color ISK300-150 Black
Material Alloy Steel
Cooling Method Air
Fan Size 80 Millimeters
Item Weight 5.5 Pounds
Number of Expansion Slots 1

About this item

  • 3 drive bays with an external 5.25" slim optical bay and two internal 2.5" HDD bays.
  • Default cooling system with a side 80mm TriCool 3-speed exhaust fan.
  • Convenient front ports with 2 x USB 3.0, 1 x eSATA and audio in/out buttons.
  • Mini-ITX case designed to work with the Mini-ITX motherboards
  • A stable 150-watt power supply delivers ample power for all your components.
Note: Products with electrical plugs are designed for use in the US. Outlets and voltage differ internationally and this product may require an adapter or converter for use in your destination. Please check compatibility before purchasing.

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Antec ISK 300-150 Black Mini-ITX Desktop Computer Case 150 Watt Power Supply


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Product Description

Antec ISK 300-150 desktop computer case is designed exclusively for Mini-ITX motherboards. With three drive bays, a quiet 80mm TriCool fan, and a stable 150-watt power supply, the ISK 300-150 can handle many of the tasks of a traditional PC, but in half the space. From petite desktop options to silent home theater, Antec ISK 300-150 is an epic case of mini proportions.

Features and Specifications

* Model: ISK300-150

* Unit Dimensions: 96mm (H) x 222mm (W) x 328mm (D)

* Packaging Dimensions: 295mm (H) x 380mm (W) x 195mm (D)

* Front Ports:

- 2 x USB 3.0

- 1 x eSATA

- Audio (AC'97 and HDA compatible) In and Out

* Cooling System: 1 x side 80mm TriCool 3-speed exhaust fan

* Drive Bays:

- External 1 x 5.25" slim optical bay

- Internal 2 x 2.5" HDD bays

* Weight:

- Net weight 5.5 lb / 2.5 kg

- Gross weight 8.3 lb / 3.8 kg

* Expansion Slots: 1 expansion slot

Customer reviews

3.9 out of 5 stars
133 global ratings

Customers say

Customers like the ease of use, fit, and ventilation of the computer chassis. For example, they mention it's easy to work on, has easy access to install components, and has a small footprint. That said, opinions are mixed on heat, noise, and power supply.

AI-generated from the text of customer reviews

80 customers mention "Quality"70 positive10 negative

Customers like the quality of the computer chassis. They mention it's a well thought out, quiet case that's easy to build a computer in. Some say it'll be a great case for a pfSense build, and is solid and well built. Overall, customers are pleased with the quality and functionality of the case.

"...mini-ITX motherboard with and AMD Ryzen 7 PRO 4750G APU and it works amazingly well and the footprint of the case is so small, it's hard to believe..." Read more

"...This case is a great one for a HTPC, it's limited to only two small 2.5 hard drives and slim optical drive...." Read more

"This is a decent little case, but it is not easy to build in, and they made some errors in packaging...." Read more

"...It's okay to work with but this can change anywhere from easy to excruciating depending on where your motherboard manufacturer decided to throw..." Read more

39 customers mention "Fit"34 positive5 negative

Customers like the fit of the computer chassis. They mention that it's small, has good airflow, and is excellent for home use. Some say that it is a perfect size case for HTPC builds and mini-ITX builds. Overall, most are happy with the fit and functionality of the product.

"...7 PRO 4750G APU and it works amazingly well and the footprint of the case is so small, it's hard to believe theres 16 threads of processing power in..." Read more

"...For my purposes this is a good case. Efficient at lower power, compact, and vented well enough to run my 10w TDP system fanless." Read more

"...Included PSU is sufficient for my needs. Room for slim optical and 2 drives...." Read more

"...Pros: It's a small case, with pretty good air flow, thanks to the included fan.-Looks pretty nice.-As small as it can be (see cons)...." Read more

19 customers mention "Ease of use"14 positive5 negative

Customers find the computer chassis easy to use. They say it's solid, easy to work on, and simple to build. They also say the installation instructions are simple and intuitive. Customers also mention that connecting the front panel ports is easy enough.

"...Connecting the front panel ports were easy enough except for the USB 3.0 header which has the usual thick cable that I had to bend it properly..." Read more

"...The case is very solid, relatively easy to work on...." Read more

"This is a decent little case, but it is not easy to build in, and they made some errors in packaging...." Read more

"...into any sharp edges while working with the case and tear down and reassembly was intuitive...." Read more

12 customers mention "Ventilation"12 positive0 negative

Customers are satisfied with the ventilation of the computer chassis. They mention that it has great ventilation, decent airflow, and plenty of grill area to move air. Some say that the fan is rather loud.

"...It also has large vents on the left side and two 80mm (only one is included) fans on the right side, but the lack of a top vent can cause heat to..." Read more

"...The ventilation is excellent. I'm not using the expansion slot but glad to have if if I need it.Pros: Front USB, audio and eSata...." Read more

"...Pros: It's a small case, with pretty good air flow, thanks to the included fan.-Looks pretty nice.-As small as it can be (see cons)...." Read more

"...This case has pretty good air flow if you take your time and route your cables properly...." Read more

11 customers mention "Space"11 positive0 negative

Customers like the space provided by the computer case. They say it has plenty of room for a mini-ITX board plus modest cooler and SSD, and provides an additional slot for extending the case. Customers also appreciate the half-height expansion slot, which is great for adding an PCI card such as a NIC. The power supply has its own compartment and a well-ventilated cover on the left. Additionally, the case has a bay for BD/DVD drive and enables installation of an external power.

"...Their is plenty of room in the case, and with two fans on the side it runs in the high 30's while idle and high 40's at load...." Read more

"...Small on the outside, as expected, but plenty of room to work inside.Cons: Going to replace the case fan with a quieter one...." Read more

"...very inflexible and difficult to work with, the ISK 300-150 provides a bit more space, more power, and provides options to expand...." Read more

"...She loves the form factor because it gives her much more counter space (she has it on a counter top)...." Read more

31 customers mention "Noise"19 positive12 negative

Customers are mixed about the noise produced by the computer chassis. Some mention that the solid state drive is so quiet that they often don't know that it's running, while others say that the included case fan and power supply sound annoying. The low and medium speed are fairly quiet, while high is noticeable however not noticeable over an Xbox. The case is solid, but not much room, and the ventilation is great. However, some customers say that fan is a bit noisier than they would like, and that the PSU is noiseless.

"...The PSU fan is quiet, though, I'll give them that...." Read more

"...Pros: Front USB, audio and eSata. Great ventilation. Included PSU is sufficient for my needs. Room for slim optical and 2 drives...." Read more

"...The power supply itself is by FSP but it makes ticking noises as I'm using the PC in low to medium loads...." Read more

"...The fans (case and PSU) that come with it are almost silent; sometimes there's a "whirrr" and sometimes they're totally silent, but it's..." Read more

13 customers mention "Heat"8 positive5 negative

Customers are mixed about the heat of the computer chassis. Some mention that it keeps it cool and has no heat issues, while others say that it runs a bit warmer than the first build and has some PSU heat issues.

"...The included tri-cool fan is a bit noisy, but certainly works to keep the case cool. The ventilation is excellent...." Read more

"...This case will keep your components cool!..." Read more

"...Oddly, at full load it doesn't make any noise at all, but does get quite warm...." Read more

"...a cozy 29 degrees C at idle and around 55 under load so the case cooling is adequate with the stock Intel cooler...." Read more

12 customers mention "Power supply"7 positive5 negative

Customers have mixed opinions about the power supply of the computer chassis. Some mention that it has a decent power supply that makes it even more capable, while others say that it uses a proprietary power supply and is disappointed with it.

"...The power load for this is very low, and as a result it is extremely quiet...." Read more

"Power supply was DOA." Read more

"...difficult to work with, the ISK 300-150 provides a bit more space, more power, and provides options to expand...." Read more

"...What I was disappointed about was the included power supply...." Read more

A challenge to build in, but well worth it if you are willing to do it!
5 out of 5 stars
A challenge to build in, but well worth it if you are willing to do it!
A very compact little case for regular mini-ITX motherboards. I'm using this with a Gigabyte B450I AORUS PRO WIFI mini-ITX motherboard with and AMD Ryzen 7 PRO 4750G APU and it works amazingly well and the footprint of the case is so small, it's hard to believe theres 16 threads of processing power in it.A thing to take note is that there's really not a lot of room to work with in the case, but it should already be obvious considering the size of the case. I suggest you put together the parts outside of the case and then install the whole set in one go. I highly recommend you also use an M.2 SSD as the 2.5 inch drives at the back might be a pain to install. Though even if you don't plan to use 2.5 inch drives, you should also route the cables round the back so that it will be easy to mount them when the need comes. As for CPU coolers, I'm using the Cooler Master G200P cooler instead. The AMD Wraith Stealth might just fit, but I didn't try it out so I can't confirm. To power up the motherboard, there is an included power supply and a power board already installed in the case, so you just need to plug in the power board with the included cable into the motherboard's 24 pin ATX power and the 8 pin CPU power if you need it. Then there's an included 90w 19v power adapter with a plug size of 5.5mm x 2.5mm, this is plugged into the power board's DC connector from the outside of the case.The power supply itself is by FSP but it makes ticking noises as I'm using the PC in low to medium loads. Oddly, at full load it doesn't make any noise at all, but does get quite warm. I'm planning to upgrade the power supply with a 180W model but I'm a bit hesistant that the included power board may get overloaded.There are 2x USB 2.0 and 2x USB 3.0 ports in the front of the case. There is also a 3.5mm headphone and microphone jack but these are not colour coded with the usual green and pink, though it's a little annoyance for me, not a big deal. Connecting the front panel ports were easy enough except for the USB 3.0 header which has the usual thick cable that I had to bend it properly otherwise it would put excessive strain on the USB 3.0 header on the motherboard. I do wish they used a thinner USB 3.0 cable like they do on the Silverstone PT13 thin-mini ITX case.Once it's all fully assembled and ready, it is really quite a good case! You can either set it on it's side, or have it stand vertically with the included stand. Or you can also use the VESA mount with the included bracket.Overall, it's a nice case, but you have to be absolutely sure you with the system you are putting together as it can be quite the challenge for a new PC builder!
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Top reviews from the United States

Reviewed in the United States on July 26, 2021
Style: ISK110 VESA-U3Verified Purchase
A very compact little case for regular mini-ITX motherboards. I'm using this with a Gigabyte B450I AORUS PRO WIFI mini-ITX motherboard with and AMD Ryzen 7 PRO 4750G APU and it works amazingly well and the footprint of the case is so small, it's hard to believe theres 16 threads of processing power in it.

A thing to take note is that there's really not a lot of room to work with in the case, but it should already be obvious considering the size of the case. I suggest you put together the parts outside of the case and then install the whole set in one go. I highly recommend you also use an M.2 SSD as the 2.5 inch drives at the back might be a pain to install. Though even if you don't plan to use 2.5 inch drives, you should also route the cables round the back so that it will be easy to mount them when the need comes. As for CPU coolers, I'm using the Cooler Master G200P cooler instead. The AMD Wraith Stealth might just fit, but I didn't try it out so I can't confirm. To power up the motherboard, there is an included power supply and a power board already installed in the case, so you just need to plug in the power board with the included cable into the motherboard's 24 pin ATX power and the 8 pin CPU power if you need it. Then there's an included 90w 19v power adapter with a plug size of 5.5mm x 2.5mm, this is plugged into the power board's DC connector from the outside of the case.

The power supply itself is by FSP but it makes ticking noises as I'm using the PC in low to medium loads. Oddly, at full load it doesn't make any noise at all, but does get quite warm. I'm planning to upgrade the power supply with a 180W model but I'm a bit hesistant that the included power board may get overloaded.

There are 2x USB 2.0 and 2x USB 3.0 ports in the front of the case. There is also a 3.5mm headphone and microphone jack but these are not colour coded with the usual green and pink, though it's a little annoyance for me, not a big deal. Connecting the front panel ports were easy enough except for the USB 3.0 header which has the usual thick cable that I had to bend it properly otherwise it would put excessive strain on the USB 3.0 header on the motherboard. I do wish they used a thinner USB 3.0 cable like they do on the Silverstone PT13 thin-mini ITX case.

Once it's all fully assembled and ready, it is really quite a good case! You can either set it on it's side, or have it stand vertically with the included stand. Or you can also use the VESA mount with the included bracket.

Overall, it's a nice case, but you have to be absolutely sure you with the system you are putting together as it can be quite the challenge for a new PC builder!
Customer image
5.0 out of 5 stars A challenge to build in, but well worth it if you are willing to do it!
Reviewed in the United States on July 26, 2021
A very compact little case for regular mini-ITX motherboards. I'm using this with a Gigabyte B450I AORUS PRO WIFI mini-ITX motherboard with and AMD Ryzen 7 PRO 4750G APU and it works amazingly well and the footprint of the case is so small, it's hard to believe theres 16 threads of processing power in it.

A thing to take note is that there's really not a lot of room to work with in the case, but it should already be obvious considering the size of the case. I suggest you put together the parts outside of the case and then install the whole set in one go. I highly recommend you also use an M.2 SSD as the 2.5 inch drives at the back might be a pain to install. Though even if you don't plan to use 2.5 inch drives, you should also route the cables round the back so that it will be easy to mount them when the need comes. As for CPU coolers, I'm using the Cooler Master G200P cooler instead. The AMD Wraith Stealth might just fit, but I didn't try it out so I can't confirm. To power up the motherboard, there is an included power supply and a power board already installed in the case, so you just need to plug in the power board with the included cable into the motherboard's 24 pin ATX power and the 8 pin CPU power if you need it. Then there's an included 90w 19v power adapter with a plug size of 5.5mm x 2.5mm, this is plugged into the power board's DC connector from the outside of the case.

The power supply itself is by FSP but it makes ticking noises as I'm using the PC in low to medium loads. Oddly, at full load it doesn't make any noise at all, but does get quite warm. I'm planning to upgrade the power supply with a 180W model but I'm a bit hesistant that the included power board may get overloaded.

There are 2x USB 2.0 and 2x USB 3.0 ports in the front of the case. There is also a 3.5mm headphone and microphone jack but these are not colour coded with the usual green and pink, though it's a little annoyance for me, not a big deal. Connecting the front panel ports were easy enough except for the USB 3.0 header which has the usual thick cable that I had to bend it properly otherwise it would put excessive strain on the USB 3.0 header on the motherboard. I do wish they used a thinner USB 3.0 cable like they do on the Silverstone PT13 thin-mini ITX case.

Once it's all fully assembled and ready, it is really quite a good case! You can either set it on it's side, or have it stand vertically with the included stand. Or you can also use the VESA mount with the included bracket.

Overall, it's a nice case, but you have to be absolutely sure you with the system you are putting together as it can be quite the challenge for a new PC builder!
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3 people found this helpful
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Reviewed in the United States on May 25, 2014
Style: ISK SeriesVerified Purchase
I had specific size considerations in mind for building my newest PC: it had to fit on the countertop of my butler's pantry, so I was looking for a PC that was roughly the size of a shoebox. That made my search rather limited, and the ISK 300-150 was one of the very few that I considered.

Given its diminutive size, Antec did a decent job with it, although there are some questionable points. The paint job was just okay: the paint on the side panel is uneven with bubbles, and the interior is unpainted. I expect a little more from a case in this price range. The ODD cover on the front feels cheap.

Moving inside, you'll see a bundle of cables leading out of Antec's 150W PSU, and a drive tray extending over the case. The PSU is not 80+ certified, and oddly, the power cables exit towards the bottom of the case. Mini-ITX motherboards typically keep their power connections at the top of the board, so you have to route the cables carefully in whatever gaps and grooves you have. The PSU fan is quiet, though, I'll give them that. The drive tray was a part that I had no issue with, contrary to some reviewers' descriptions of it. My Noctua NH-L9i CPU cooler cleared the drive tray with room to spare, although the Intel stock cooler might not offer as much of a buffer.

Antec chose not to include the 11-page manual (!!) because they wanted to be "green", which they say while including a woefully inefficient PSU. The power LED cable is oddly shorter than the other front-panel cables, even though the pins are always clustered in the same place on every motherboard. The USB 3.0 cable is thick and stiff, which is terrible where space is a luxury, but this is a problem that seems to plague every USB 3.0-equipped case. The manual describes every screw as a "Phillips-head screw", despite including four different types of screws in the accessories box. It also says that the ODD should be secured using only one screw (!!!), although I was able to screw in my Samsung DVD writer on both sides.

I would strongly advise against using the expansion slot, because you'll be blocking off valuable space for cable management. I routed at least five cables around that area-- I'm not sure what I would've done if I had to jam an expansion card in there. Forget installing a graphics card, this case is meant for integrated graphics only.

Once it's all put together, it's not a bad little case. A little pricey for what it is, but there aren't too many alternatives in this particular form factor.

Top reviews from other countries

Michael A.
4.0 out of 5 stars Very nice compact case
Reviewed in Canada on July 28, 2023
Style: ISK SeriesVerified Purchase
Bought it back in 2012 and still use it connected to the TV in the basement. Roomy enough to work with, Mind you, I don't have a dedicated GPU in it since its just for streaming
MW
5.0 out of 5 stars Great case.
Reviewed in Canada on November 10, 2016
Style: ISK SeriesVerified Purchase
Great case, I have it sitting on its side vertically behind my monitor. Installed an Asus H170I-PRO motherboard, i5-6600 processor, 16gb ram and an SSD. Using the integrated graphics. No power issues whatsoever.
Wenfeng Zhu
5.0 out of 5 stars Five Stars
Reviewed in Canada on January 13, 2018
Style: ISK110 VESA-U3Verified Purchase
Small and quite.
LG4
4.0 out of 5 stars Well built. Small, so everything is crampy inside ...
Reviewed in Canada on October 13, 2015
Style: ISK SeriesVerified Purchase
Well built. Small, so everything is crampy inside. Make sure you plan your wire connections, especially front panel as wires are rather short. Side fan rapidly became noisy. It cannot be replaced once motherboard is installed so I suggest replacing the original side fan with a high quality PWM 80 mm fan before installing motherboard.
Good Beard Computers
2.0 out of 5 stars I would choose something else
Reviewed in Canada on October 27, 2019
Style: ISK110 VESA-U3Verified Purchase
I didn't like. Really tight fit with any itx board. Forget trying to use an SSD or Laptop drive, this bad boy pretty much requires an M.2 drive. Power connections from the pico power supply were a pain and the USB 3.0 connector cable was so thick and bulky that the board connector is in danger of breaking. Finally, the exterior is cheap plastic that scratches easily. It is very small but it is just not worth the effort for the overall look of it. I don't recommend
2 people found this helpful
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