SKU: 35770047331

Supermicro SuperChassis 835TQ-R921B

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Description

Supermicro SuperChassis 835TQ-R921BThe Supermicro SuperChassis 835TQ R921B is engineered for demanding data center environments where reliability, density, and expandability matter. This 3U rack mount chassis delivers a rigid, black painted enclosure with room for a versatile storage configuration and powerful server components. Designed to support E ATX and ATX motherboards, it provides a robust foundation for enterprise servers, virtualization hosts, dense storage nodes, and high

The Supermicro SuperChassis 835TQ-R921B is engineered for demanding data center environments where reliability, density, and expandability matter. This 3U rack-mount chassis delivers a rigid, black-painted enclosure with room for a versatile storage configuration and powerful server components. Designed to support E-ATX and ATX motherboards, it provides a robust foundation for enterprise servers, virtualization hosts, dense storage nodes, and high-performance computing deployments. With 11 external drive bays, dual 920 W power supplies installed, and seven PCIe expansion slots, the 835TQ-R921B delivers both the capacity and the flexibility to power modern workloads while fitting neatly into standard 19-inch racks.

  • Compact 3U rack-mount design for dense deployments: This chassis optimizes rack space, enabling high-density configurations without sacrificing accessibility or serviceability. The 3U form factor is ideal for data centers seeking efficient use of rack real estate while maintaining room for future upgrades.
  • Extensive external drive bay family for flexible storage: Equipped with 3 external 5.25" bays and 8 external 3.5" bays, the 835TQ-R921B supports a wide range of storage strategies—from boot drives and optical media needs to large-scale data storage and archival layouts. The modular bay layout makes it easy to tailor storage performance to specific workloads and growth trajectories.
  • Pre-installed cooling to handle high-demand workloads: Featuring 5 x 3.15" fans pre-installed for effective airflow, this chassis is prepared to sustain performance in busy rack environments. Efficient cooling helps maintain component longevity and reduces downtime risk during peak operations or heavy I/O activity.
  • Redundant power for reliability and uptime: Two 920 W power supplies are installed to deliver redundancy and stable power delivery. This configuration supports mission-critical services, minimizes risk of downtime due to power supply failure, and provides headroom for future expansion and peak workload demands.
  • Broad compatibility and expansion slots for future-proofing: The chassis supports E-ATX and ATX motherboards and offers 7 PCIe expansion slots for GPUs, NICs, storage controllers, or other adapters. This makes the 835TQ-R921B a versatile platform for virtualization, data processing, networking, and accelerator-based workloads, while maintaining a clean, organized internal layout for easy maintenance.

Technical Details of Supermicro SuperChassis 835TQ-R921B

  • Chassis type: 3U rack-mountable chassis
  • Color/finish: Black
  • Motherboard compatibility: E-ATX and ATX
  • Drive bays: 11 external bays (3 x 5.25", 8 x 3.5")
  • Cooling: 5 x 3.15" fans installed
  • Power supply: 2 x 920 W power supplies installed
  • Expansion slots: 7 PCIe expansion slots
  • USB connectivity: 2 x USB ports
  • Chassis height: 3U

How to install Supermicro SuperChassis 835TQ-R921B

Installing the 835TQ-R921B in a standard data center rack is straightforward and designed for dependable serviceability. Start by preparing a clean, stable rack and ensuring you have compatible rail kits for a 19-inch installation. Slide the chassis into the rack, align the mounting holes, and securely fasten the unit with screws to ensure rigidity during operation and maintenance. Connect both 920 W power supplies to a reliable power source that supports redundancy, and verify that both units engage correctly before powering on. Install your motherboard in the appropriate orientation, using the standoffs designed for E-ATX or ATX form factors, and mount the I/O shield. Next, populate the external drive bays with your storage devices—three 5.25" bays for ancillary drives or media, and eight 3.5" bays for primary storage or data drives. Route and manage all data and power cables neatly to avoid airflow obstruction, then install PCIe expansion cards into the seven available slots based on your workload—NICs for networking, GPUs for compute acceleration, or storage controllers for enhanced I/O performance. Use the two USB ports for maintenance tasks, boot media, or firmware updates as needed. After all components are installed, perform a thorough power-on self-test, verify POST, check BIOS/firmware settings, and validate RAID or storage configurations to ensure your deployment meets performance expectations. Regular rack maintenance, dust management, and cable organization will help sustain long-term reliability in busy data centers.

Frequently asked questions

  • What motherboards does the chassis support? It supports E-ATX and ATX motherboards, giving you flexibility for a wide range of server and workstation configurations.
  • How many drive bays are available on the chassis? There are 11 external drive bays: 3 x 5.25" bays and 8 x 3.5" bays, enabling versatile storage setups for OS, data, and expansion needs.
  • What power supplies are included? The unit ships with two 920 W power supplies installed to provide redundancy and reliable power delivery for demanding workloads.
  • What is the chassis height and form factor? The chassis is a 3U rack-mountable enclosure, designed for dense deployments in standard data center racks.
  • What color is the chassis? The SuperChassis 835TQ-R921B features a black finish, suitable for professional data center aesthetics and rack alignment.
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: 35770047331

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M
Verified Purchase
M M
Dallas, US
★★★★★ 5
Awesome USB-C Hub
My new MacBook Air has USB-C ports only, so I recently upgraded to this USB-C hub, a 7in1 Multi-Port USB-C Adapter, and it has completely solved all of my port needs. With the two USB-A ports, I can still use my old memory sticks, without replacing them, as well as two USB-C ports, all making moving files, movies and pictures, with ease. I needed something fast and reliability, and this little device delivers on both fronts. One of the USB-C ports it a power passthrough, which works great for charging device, like my MacBook Air. It is very easy to use, just plug and play, making it compatible with the MacBook Air. Also has a built in card reader, and a HDMI port, pretty much covering all your port needs. If you are looking for a well built, reliable, fast, and compact USB-C hub that can everything, this is the one to get. Highly recommended!
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Reviewed in the United States on May 5, 2026
M
Verified Purchase
Michael Breinig
Bozeman, US
★★★★★ 5
Good value and best of all - it works
This did the job I wanted it to. Expanded the ports when my laptop just ran out. No delay or ANY issue no matter what I plugged where and after a little figuring out where things went (not difficult) its performing very well. As far as value, its great. I always evaluate something by if I would purchase it again. Yes I would. if you need it, get it and set it up and move on with less worry about port capacity.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 28, 2026
S
Verified Purchase
Simon
Grantham, US
★★★★★ 4
Good Multipurpose Hub, Some Limits on Power Draw
I use this with a Dell Latitude 7430 with a 65W charger, and it works fine as a docking hub. The only problem I've encountered is when rebooting, the boot will pause with a warning message to tell me that the laptop may encounter reduced performance because it isn't able to receive the full 65 watts. I don't get that warning if I'm not running the power supply through the hub. Otherwise, if I just use the hub as a port extender everything is fine. It has a compact design and is reasonably lightweight. It would be ideal for travel. Like my other Anker hubs, it's well constructed and doesn't feel cheap although it's good value for money.
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Reviewed in the United States on June 9, 2026
T
Verified Purchase
The Gabers
Phoenix, US
★★★★★ 5
I don't know how I ever lived without it.
I'm very happy with this device. My laptop doesn't have an ethernet port and only has one USB-C SuperSpeed port, so I bought an ethernet to USB-C cable to connect my ethernet switch to the Anker and into my laptop's USB-C port, and it works great. I don't need a fast internet connection for the things I do, so my service is only a 50mbps symmetrical up/down connection, and that's what I get even while transferring files from my external between other devices, charging my phone, and using composite devices. I bought the Anker 100W Compact and Foldable USB C Charger for it and it charges my S24 extremely fast. It's very well built, yet super lightweight. I love the sleek, slender design. It's the perfect size to easily slide into a pocket, store in a desk drawer, or keep handy in a laptop case or backpack. Using it is easy. Just plug it into your computer and plug your devices into it. Just make sure you have a power supply for it if you're charging or powering other devices, using external storage, or running anything else that taxes USB power. I have had ZERO connectivity issues with it — no random disconnect/reconnect blips, no failed transfers for huge amounts of data that have taken up to 45 minutes, no static his or crackle when my headset is running through it... no problems at all. It's actually kind of spooky now that I think about it... I can't recall a time I've ever had a similar device that didn't have some nuance that got under my skin, like a loose connection, random disconnections, having to reinstall the drivers all the time, or having to troubleshoot just to get it connected for the first time. The most stress I've put it through was with my keyboard connected, ethernet running through it, my S24 charging and transferring about ~20gb of pictures and videos to my 2T external HD at the same time that my laptop was transferring about ~500gb of media and documents to the HD, too, and I was surprised by how warm it DIDN'T get. My only complaint is trivial and unique to my situation — I wish output cord was longer. About six inches would do. My laptop sits up on an adjustable stand that clamps to my desk, and the end where the output cord is hangs a few inches off of my desk. This puts extra stress on the USB-C port and can wear it out faster or damage it. I haven't had a use for the HDMI port yet, but I eventually will. I use all of the other ports for my work and personal devices, though. These include: a 2tb external hard drive; a Poly Blackwire 3320 Series headset; a dongle for a wireless mouse/keyboard combo or a wired keyboard and a dongle for a wireless mouse; my Galaxy S24 charges and transfers files through it super fast; I have several thumb drives ranging from 20gb to 512gb that I regularly use; I recently bought an RCA/S Video-to-USB converter to digitize old home movies I plug into it, too.
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Reviewed in the United States on October 25, 2025
C
Verified Purchase
Carl H
Chelsea, US
★★★★★ 5
Anker wins again.
Worked well for usb hub but hdmi was not reliable. Disappointed because usually Anker products are good quality. UPDATE: Anker voluntarily offered a refund so my faith in Anker has been fully restored.
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Reviewed in the United States on May 5, 2026

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