Overview

The ZALMAN S6 Black is a mid-tower PC case built around a mesh front panel. Its model name is S6 Black, and the CS9786 reference appears alongside it in the Japanese market listing. The design prioritizes airflow: cool air enters through the mesh front and heated air is pushed out quickly, which is the core idea behind this chassis.
Four fixed RGB fans come pre-installed, so builders get both lighting and cooling without buying extra fans on day one. The side panel is tempered glass and attaches with a tool-free ball-stud and socket mechanism, while the lower edge of the glass is held in a groove. That combination makes opening the case for maintenance noticeably less fiddly than screw-mounted panels.
Motherboard support covers ATX, Micro-ATX and Mini-ITX. Graphics cards can measure up to 345mm, and the front can host a radiator up to 360mm. Dust filters sit on the top, front and bottom, which helps keep long-term builds cleaner. Overall, the S6 Black balances mid-tower capacity with straightforward assembly.

Compatibility Guide

Because the case accepts ATX, Micro-ATX and Mini-ITX boards, it suits everything from a compact Mini-ITX build to a full ATX layout. There is enough internal room that large CPU coolers and long graphics cards remain realistic options.
The graphics card clearance tops out at 345mm. That leaves headroom for triple-fan cards, though you still want some distance between the card and the front fans. A radiator up to 360mm can be mounted at the front, which makes the chassis a natural fit for all-in-one liquid cooling.
The front-top interface includes USB 20Gbps Type-C. For anyone who regularly connects fast external storage or modern peripherals, having that port on the front panel is genuinely useful. Cable management space is also provided, so routing cables behind the motherboard tray stays manageable.

  • Motherboards: ATX / Micro-ATX / Mini-ITX
  • Graphics card clearance: up to 345mm
  • Front radiator: up to 360mm
  • Front I/O: USB 20Gbps Type-C, USB 2
  • Dust filters: top, front, bottom

Product Info

The S6 Black launched on October 16, 2026, and sells for around 7,960 yen. Given four fixed RGB fans, a tempered glass side panel and a USB 20Gbps Type-C port, it lands in the entry-to-mid tier of the case market. The body measures 412 mm long, 215 mm wide and 486 mm tall, and weighs 5.31 kg.
At this price point, many competing cases ship with only one or two fans. The S6 Black instead includes four, which lowers the extra spend needed to finish a build. Fan speed control and noise figures are not published, so buyers who prioritize silence should look for hands-on impressions before committing.

Best Use Cases

  • First-time mid-tower builders: four included fans remove the guesswork of choosing cooling parts, freeing budget for the CPU and GPU. Not the right pick for someone chasing maximum quiet.
  • Builders planning a front-mounted 360mm radiator: the front radiator support and mesh intake make liquid cooling setups easier to plan. Poor fit for anyone who needs a small-footprint case.
  • Users who want to show off their build through glass: the tempered glass panel and fixed RGB fans make the finished system part of the display. Those who want deep per-LED lighting control may find fixed RGB limiting.

Things to Consider

Fixed RGB fans are not designed around customizable lighting patterns, so anyone expecting addressable RGB effects should plan on swapping fans. The 345mm graphics card limit is generous, but mounting a front radiator reduces the effective space for a long card, so check radiator thickness when combining both.
At 5.31 kg the case is typical for a mid-tower, but it is worth confirming your desk or shelf can handle the finished weight. Because noise data is not published, buyers who need a near-silent system should treat the included fans as a starting point rather than a final answer.

FAQ

Q: Can I install a Micro-ATX motherboard?
A: Yes. Micro-ATX and Mini-ITX are both listed as supported form factors, and the extra room left by a smaller board can help with cable routing and airflow.
Q: Can a long graphics card and a front 360mm radiator coexist?
A: The case supports cards up to 345mm and front radiators up to 360mm. When using both, radiator thickness can affect clearance, so measure your specific parts before buying.
Q: Do I need to buy extra case fans?
A: Four fixed RGB fans are included, which covers basic airflow. Additional or replacement fans only make sense if you want stronger cooling or quieter operation.

Product Disclosure (Amazon)

  • Manufacturer: ZALMAN
  • Model: S6 Black
  • ASIN: B0GZYB9ZVB
  • Note: This article covers a manufacturer-made product based on Amazon listing details.