SKU: 49198286298

iStarUSA D-400S3 Rackmount Enclosure

Sale price$129.01 Regular price$143.34
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Description

iStarUSA D-400S3 Rackmount EnclosureThe iStarUSA D 400S3 Rackmount Enclosure is an ultra compact, industrial grade 19 inch chassis designed to deliver exceptional expandability without sacrificing footprint. With a thoughtful balance of depth, airflow, and accessibility, this enclosure is tailor made for space constrained data centers, labs, edge deployments, and rugged industrial environments. Its compact 13. 7" depth enables tight rack installations while still providing robust

The iStarUSA D-400S3 Rackmount Enclosure is an ultra-compact, industrial-grade 19-inch chassis designed to deliver exceptional expandability without sacrificing footprint. With a thoughtful balance of depth, airflow, and accessibility, this enclosure is tailor-made for space-constrained data centers, labs, edge deployments, and rugged industrial environments. Its compact 13.7" depth enables tight rack installations while still providing robust support for mainstream components, making it an ideal foundation for compact workstations, compact servers, or modular compute nodes that demand reliable performance in a durable, space-saving chassis. Built to accommodate a wide range of hardware, the D-400S3 emphasizes versatility—giving administrators and integrators a single, scalable enclosure that can grow with evolving workloads and storage needs.

  • Compact 13.7" depth: Designed to fit comfortably in standard 19" racks, the D-400S3 maximizes usable rack space, reduces cable clutter, and simplifies cooling management in crowded environments.
  • Full-size ATX motherboard compatibility: The full-size I/O area supports all ATX motherboards, enabling broad platform choice and compatibility with mainstream CPUs, GPUs, NICs, and other essential components.
  • Expansion capacity up to seven full-height add-on cards: This chassis is built for dense expansion, allowing GPUs, RAID controllers, network adapters, and other PCI/PCIe cards to be installed in a compact footprint to handle demanding workloads.
  • Dual external 3.5" drive bays with support for up to 4 x 2.5" drives via BPU-2535: Perfect for flexible storage configurations, hot-swap options, and high-throughput data access in a compact server or workstation.
  • One slim 5.25" bay for optical or other slim devices: Provides additional versatility for media, diagnostic tools, or legacy peripherals without compromising overall rack efficiency.

Technical Details of iStarUSA D-400S3 Rackmount Enclosure

  • Depth: 13.7 inches (compact chassis designed for space-constrained racks)
  • Motherboard compatibility: Full-size ATX motherboard I/O, enabling broad compatibility with current-generation CPUs and PCIe devices
  • Expansion slots: Up to seven full-height add-on cards, offering expansive I/O, GPU, or controller options in a single 19" enclosure
  • Drive bays: Two external 3.5" drive bays; supports BPU-2535 for up to four 2.5" drives (adds flexible, high-density storage capacity)
  • Bay configuration: One 5.25" slim bay for optical or other slim devices
  • Chassis design: Industrial-grade rackmount enclosure built to endure demanding environments while delivering reliable performance

How to Install iStarUSA D-400S3 Rackmount Enclosure

  • Prepare the rack: Verify that the rack rails are compatible with a 19" rackmount chassis and install the rails according to your rack manufacturer’s guidelines. Ensure the mounting surface is clean and free of obstructions to promote proper airflow.
  • Mount the enclosure: Slide the D-400S3 into the rack, align mounting holes with the rails, and secure the chassis using screws or hardware provided by the rack kit. Confirm that the enclosure sits level and that there is sufficient clearance for rear cable management.
  • Install the ATX motherboard: Open the chassis access panel and mount your full-size ATX motherboard to the internal tray, aligning the I/O shield with the rear cutouts. Secure the motherboard with standoff screws and connect essential power and data cables, including the 24-pin ATX power connector and CPU power leads.
  • Configure expansion cards: Determine your workload and install up to seven full-height expansion cards into PCIe/PCI slots. Maintain proper spacing between cards to promote adequate airflow and reduce thermal throttling. Re-seat cards if any slot is initially difficult to engage.
  • Set up storage: Install drives into the two external 3.5" drive bays, or use iStarUSA BPU-2535 adapters to support up to four 2.5" drives, depending on your storage strategy. Route cables cleanly to the rear and secure drive trays to minimize vibration and movement during operation.
  • Install the slim bay device: If you plan to use a 5.25" slim device (optical drive or similar), insert it into the slim bay and connect its data and power cables. Ensure the cables are neatly managed to avoid obstructing fans or airflow pathways.
  • Power up and test: Connect the power supply, perform a POST check, and verify that all installed components are recognized by the system. Confirm that fans operate correctly and monitor thermals during a brief burn-in to ensure stable operation.
  • Cable management and airflow: Organize front-to-rear cables to improve airflow and reduce dust collection. Use any available cable routing channels or ties to maintain a clean interior, which helps maintain component longevity and consistent performance.

Frequently asked questions

  • Q: What motherboard size does the D-400S3 support? A: The enclosure supports full-size ATX motherboards via its standard I/O area, providing broad compatibility with many mainstream platforms.
  • Q: How many expansion cards can I install? A: You can install up to seven full-height add-on cards, enabling substantial expansion for GPUs, NICs, storage controllers, and other PCI/PCIe devices within a compact 19" rack enclosure.
  • Q: What are the drive configurations? A: The enclosure includes two external 3.5" drive bays. It also accommodates up to four 2.5" drives when using iStarUSA BPU-2535 adapters, offering flexible storage expansion without compromising rack space.
  • Q: Is there a bay for optical drives? A: Yes, there is one slim 5.25" bay suitable for optical drives or other slim devices to support data transfer and maintenance tasks in a compact form factor.
  • Q: What is the depth of the enclosure? A: The D-400S3 features a shallow 13.7" depth, purpose-built to maximize rack density and ease integration in space-limited environments.
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. 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
SKU: 49198286298

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4.9 ★★★★★
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LATASHA JORDAN
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Size: 9, Color: Black
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Reviewed in the United States on June 1, 2026
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Blackqueen30
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★★★★★ 5
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Size: 9.5, Color: Black
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Reviewed in the United States on May 16, 2026
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Amazon_Customer
Battle Creek, US
★★★★★ 5
The "Lazy Professional" Look: Is Hands-Free Luxury Actually Real?
Size: 9.5, Color: Black Napa Leather
Living down here in Florida, my footwear needs are pretty specific. It’s hot, it’s humid, and I spent half my life rushing from the car into work or a meeting. I’ve reached that age where I value efficiency just as much as style—maybe more. I’ve been eyeing the Marc Joseph New York Hands-Free Slip-on Penny Loafers for a while, and after putting them through the wringer, here is the honest truth from someone who just wants to look sharp without the hassle. The "Just Step-In" Reality Look, the big selling point here is the "Hands-Free" tech. We’ve all seen the commercials for those athletic slip-ins, but finding that in a legitimate leather penny loafer is a different game. Does it work? Yes, surprisingly well. The heel counter is firm enough that it doesn’t collapse when you slide your foot in, but it doesn’t feel like a piece of plastic digging into your Achilles once you’re in. For those of us who are tired of bending over or hunting for a shoehorn every morning, this is a genuine quality-of-life upgrade. The Florida Factor: Comfort and Style The leather is actual calfskin (on most models), which is a must for the Florida heat. Synthetic shoes turn into a sauna within ten minutes, but these breathe reasonably well. The aesthetic is classic—it’s a "professor" shoe through and through. You can wear them with chinos and a blazer for work or throw them on with some nice jeans for a weekend lunch. Inside, they’ve got a gel heel insert and a padded footbed. It’s not quite "walking on a cloud"—let’s not over-hype it—but it’s a massive step up from the hard, flat soles of traditional dress loafers. I’ve spent four hours on my feet lecturing, and my arches didn’t hate me by the end of the day. The Sizing Gamble Here’s where you need to be careful. The consensus from other guys (and my own experience) is that the sizing is a bit of a coin toss. They tend to run a little large and sometimes wide. If you have narrow feet, you might find the sides "gaping" or flaring out when you walk, which kills the sleek look. I’d recommend ordering a half-size down if you’re usually between sizes. The Breakdown The Pros: True Hands-Free: You can actually put these on while holding a coffee and a briefcase. No hands needed. Legit Materials: The calf leather feels premium and smells like the real deal. Versatility: Perfectly bridges the gap between a "car shoe" and a formal loafer. Comfort: The gel insert makes a noticeable difference for long-duration wear. The Cons: Sizing Inconsistency: They can run wide, leading to some "heel slip" if you don't get the perfect fit. Break-in Period: The heel is stiff by design (to allow for the slip-on feature), so expect a day or two of minor stiffness. Price Point: They aren't cheap, though often on sale. Value for Money Are they worth it? If you’re comparing them to high-end Italian brands that cost $500, these are an absolute steal. They look 90% as good for a fraction of the price. However, if you're used to $60 mall shoes, the jump to $150+ might feel steep until you realize you’re paying for the convenience of never having to touch your shoes to put them on. For a daily driver in a professional setting, the value is definitely there.
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Reviewed in the United States on April 10, 2026
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Edward A. Cleveland
Bozeman, US
★★★★★ 5
Step In Look Good
Size: 11.5, Color: Cognac Napa Leather
I am wearing these shoes as I write this review, and they look and feel great. I have a bit of a disability with drop foot on the right leg and bilateral neuropathy and have been wearing step in shoes for about 10 years. But the first company that introduced leather dress and casual shoes stopped making them and now only makes sport and casual shoes. So I have been searching for some that meet my need for shoes like this and this company has given me three pairs, so far. Easy to get into, comfortable to wear, and good looking. And they take polish very well, too. (Remember how to do that?). We may buy another pair or two in different styles as well.
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Reviewed in the United States on April 26, 2026
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Book dude
Massapequa, US
★★★★★ 4
Runs tight. Skinny and smaller than other brands.
Size: 8.5, Color: Brown
Comfy and lots of support. Cushiony. Beware: the brown I ordered runs small. Tighter than other brands.
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Reviewed in the United States on April 23, 2026

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