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Description
In Win BM639 Computer CaseThe In Win BM639 Computer Case is a compact, versatile chassis designed for space conscious builds without sacrificing essential features. Built to support Mini ITX and Mini DTX motherboards, the BM639 combines a sleek, modern silhouette with practical drive and expansion options, making it ideal for small form factor (SFF) desktops, home theaters PCs, or compact workstation setups. With a built in 160 W power supply, it delivers reliable power for
The In Win BM639 Computer Case is a compact, versatile chassis designed for space-conscious builds without sacrificing essential features. Built to support Mini ITX and Mini DTX motherboards, the BM639 combines a sleek, modern silhouette with practical drive and expansion options, making it ideal for small form factor (SFF) desktops, home theaters PCs, or compact workstation setups. With a built-in 160 W power supply, it delivers reliable power for compact configurations while leaving room for efficient cooling and quiet operation. Choose between the classic black or crisp white finish to complement your setup and express your style while keeping temperatures in check and performance within reach.
- Compact, space-saving design: The BM639 is a small form factor chassis crafted to fit Mini ITX and Mini DTX motherboards, making it a perfect choice for desks, living rooms, dorm rooms, or offices where space is at a premium.
- Integrated power supply: A 160 W power supply is installed in the BM639, enabling compact systems to run reliably without the need for a bulky or separate PSU. This feature is ideal for energy-efficient builds with low-power components.
- Flexible drive and bay configuration: The case provides a balanced combination of external and internal bays: 1 external 5.25" bay for optical drives or compatible devices, 1 internal 3.5" bay for larger hard drives, and 1 internal 2.5" bay for modern SSDs, offering versatile storage options in a small footprint.
- Cooling and front I/O options: Supports up to 2 fans to help maintain stable temperatures in a compact enclosure, combined with accessible front I/O that includes 2 USB ports and 1 x audio in plus 1 x audio out for convenient connections to peripherals and headsets.
- Color and aesthetics: Available in classic black and clean white finishes, the BM639 presents a modern appearance that blends seamlessly with contemporary setups while maintaining a minimal, understated look.
Technical Details of In Win BM639 Computer Case
- Supported motherboard form factors: Mini ITX, Mini DTX
- Power supply: 160 W power supply installed
- Drive bays: 1 x external 5.25" bay, 1 x internal 3.5" bay, 1 x internal 2.5" bay
- Expansion slots: 2 x slots
- Cooling: Supports up to 2 x fans
- Front I/O: 2 x USB ports, 1 x Audio In, 1 x Audio Out
- Color options: Black, White
- Overall design: Small form factor chassis engineered for compact builds with efficient layout
how to install In Win BM639 Computer Case
- Unpack the BM639 and ensure you have the case, all mounting hardware, and your components ready. Confirm that your motherboard is compatible with Mini ITX or Mini DTX and that your cooling solution will fit within the compact interior.
- Place the BM639 on a clean, stable surface and disconnect power. Note that the case comes with a 160 W power supply already installed, so plan your component selection to remain within the available power budget for a stable system.
- Install the motherboard by aligning it with the case’s mounting points. Secure the Mini ITX or Mini DTX motherboard using the appropriate screws, taking care not to over-tighten and avoiding short circuits.
- Install storage drives: use the internal 3.5" bay for a traditional hard drive and the internal 2.5" bay for a solid-state drive. If you need to pair drives, ensure cables and clearance do not obstruct airflow or plug access.
- Connect the front panel USB and audio cables to the corresponding headers on the motherboard. Follow your motherboard’s manual for exact header locations and pin assignments to guarantee proper functionality.
- Mount the power supply connections, but remember the BM639 already includes a 160 W PSU. Connect the main 24-pin motherboard power, plus any required 8-pin CPU power, while keeping cables tidy to maximize airflow in the compact space.
- Organize cables to minimize clutter and improve airflow. Use available routing areas to tuck cables away from fans and the motherboard tray to reduce obstructions and noise.
- Verify all connections, double-check that no cables are pinched, and reseat any components if necessary. Close the case, secure all screws, and perform a first boot to enter your BIOS and configure boot order, fan curves, and any case sensors if supported by your hardware.
- Install your operating system and drivers, then monitor temperatures during initial use to ensure the cooling solution maintains safe levels in this compact chassis. If temperatures climb, revisit cable management and consider adjusting fan speed profiles for better cooling without excessive noise.
- Regularly inspect the interior for dust buildup and clean with a soft brush or compressed air as needed to maintain airflow. A clean interior helps sustain performance and longevity for your compact BM639 build.
Frequently asked questions
- Q: What motherboards does the BM639 support? A: It supports Mini ITX and Mini DTX motherboard form factors, making it suitable for small, efficient builds without compromising essential features.
- Q: How many bays does the BM639 provide? A: The case includes 1 external 5.25" bay, 1 internal 3.5" bay, and 1 internal 2.5" bay, offering practical storage options in a compact footprint.
- Q: Is there a power supply in the BM639? A: Yes, the BM639 comes with a 160 W power supply installed, designed to support modest, energy-efficient configurations.
- Q: How many USB ports are available on the front? A: The BM639 features 2 front USB ports along with 1 x audio in and 1 x audio out for easy peripheral connections.
- Q: Can I add more fans to improve cooling? A: The case supports up to 2 fans, allowing you to tailor cooling performance to your components while keeping noise levels reasonable in a small enclosure.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.1 ★★★★★
Based on 26 reviews
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Product Reviews
★★★★★ 5
The Best for Athletics
Color: Black/Gray
This is a sleek, light wristwatch that will not weigh you down with its bulk. Forget the gigantic profile of a "survivalist" wristwatch. This unisex model is svelte and slim, not adding much to the wake you generate while swimming, or the swing of your arms while running, or the wind as it passes around your wrists and hands while you are speeding by on your racing bike. This is only 34mm across, by 35mm tall, by 11.5mm thick. The wristband is 13mm at its median working width. Timex styling cannot be beat, and neither is the resin-rubber-like material. I don't know about you, but the price is something I take a good look at. I want a watch that is reasonably priced and high-quality. I don't want to spend $200 to $1000 on a watch and worrying about being careful with it. If it gets smashed, it's only $30 to $50, not a big loss, and the quality is way better than what they were making in the 1980's. These watches are made for athletics and the real world.
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Reviewed in the United States on August 14, 2025
★★★★★ 4
Great watch, flimsy band
Color: Gray/Lilac
I bought this watch to replace a similar model because the band broke. I see this is a recurrent problem in many other reviews. However, I liked the watch enough to buy it again anyway. I found the new model easy to set, being fairly intuitive. So far it keeps perfect time. I use this watch mainly as a travel watch, and loved the dual time zone function. I am pleased that the newer model now has the ability to set 3 times zones instead of 2, which is an added bonus. The only con I see at this point is the flimsy strap. Unfortunately, the strap on this model is even thinner than on the previous one, and I wonder how long it will last. Also I wonder about the battery length. I think these watches may have been sitting around a long time. The setting showed 2012. I am afraid much of the battery life of the original battery may have already been used up and the battery may need replacing early. Only time will tell. The watch fits my small wrist fine and it is a little more attractive than the old model. I give it 4 stars instead of 5 only because of the band problem.
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Reviewed in the United States on August 13, 2016
★★★★★ 5
Great fit and quality!
Color: Black/Gray
Always love the quality of a Timex watch. Great fit for smaller wrists.
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Reviewed in the United States on May 11, 2026
★★★★★ 5
Fine for a man (with skinny wrists)
Color: Black/Gray, Color: Black/Gray
I have an older mens ironman which has gotten a little beat up and needs replacing. The band is much longer than I need. The metal clasp sits off-center on the underside of my wrist, closer to the part of my wrist which curves around to the front. The too-long strap sometimes flops around and catches on things. I couldn't find a smaller-band mens version, so I tried this "womens" watch (picking the most manly-looking one, of course). I like it better. The band fits my wrist much better, with the metal band in the middle and no flop. I also like that the watch is lighter and the face and band are smaller and less bulky, so it is less noticeable when I'm wearing it (cycling weight weenies will appreciate this). The face is still large enough to be easily legible and contains all of the same great features as my mens ironman watch, plus the newer versions now have an hourly chime, nice! Other info: my wrist is ~17.5cm or ~7.0" around. On this watch, I use the 6th out of 9 slots on the band. On my mens ironman, I use the 3rd out of 9 slots. Weight: this one = 28g, mens = 39g.
Pics show comparison of my prior mens ironman with this new "womens" ironman. Photo order is confusing (couldn't figure out how to change that). They are: (1) side-by-side, mens on left, (2) mens band (wider and clasp is off-center on my wrist, end of band hangs over the edge of my wrist -- too long for me -- catches on things), (3) womens band (less wide, clasp is more centered on my wrist and end does hang over edge of my wrist), (3) womens watch (smaller, and looks new), and (5) mens watch, looking a little beat up.
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Reviewed in the United States on August 5, 2017
★★★★★ 5
Watch holds up in saltwater!
Color: Black/Gray
I bought this watch to use for my trip to the Galapagos Islands. I read two reviews that the watch does not hold up in salt water. I went snorkeling in the ocean 6 times, about 45 minutes each time. The watch did not leak. I did take precautions by keeping the watch under my rash guard and lowering myself slowly into the water. I also rinsed off my watch each time I snorkeled. I also bought this watch for the multi time zone feature by saving the time on the west coast, east coast and Galapagos time since I cannot change the time on my Fitbit until I land in an airport. I did not use any other features of the watch because I generally use my phone or Fitbit for an alarm or timer. The only complaint I have is that Timex now discourages changing the battery by the consumer. I changed the battery myself on my old Ironman watch. The new Ironman watch is fitted with triangular head screws. So I will have to purchase screwdrivers with triangular heads when it comes time to change the battery.
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Reviewed in the United States on February 26, 2025
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