SM580 Mini-ITX PC Case for 280mm AIOs and 3-slot GPUs
SM580Mini-ITX PC Case for 280mm AIOs and 3-slot GPUs
  • Supports Mini-ITX motherboards
  • Front panel with USB 3.1 Type C (SS+ 10 Gbit/s), USB 3.0 Type A, and Dual Audio Jacks
  • Upper plenum for mounting one 280mm AIO liquid cooler or two 140mm / 120mm liquid coolers
  • Three slot GPUs up to 328mm long, SFX or SFX-L form factor power supplies, 2x 2.5" SSD
  • Optional brackets for up to 5x 3.5" HDDs and/or bottom 120mm radiator
  • Mounts two 140mm fans in bottom for high performance cooling
  • Magnetic dust filters available from Demcifilter
  • Designed and manufactured in the USA by Sliger


Technical Specifications

  • Mini-ITX (170mm × 170 mm)
  • Not compatible with Mini-DTX boards such as the ASUS ROG Crosshair VIII Impact AM4
Liquid Cooling
  • AIO Liquid Cooler Compatibility List
  • Click here for full AIO Compatibility Spreadsheet [Google Docs]
  • 1x 280mm AIO or radiator
  • Maximum 328mm x 150mm x 72mm (LxWxH -- 72mm height includes fan and radiator thickness)
  • RECOMMENDED: ASETEK 680LS, NZXT Kraken X61, X62, or Z63, Cougar Aqua 280, ThermalTake Floe Ring 280
  • DIFFICULT: Corsair Hydro H115i Platinum RGB, EVGA CLC 280mm, Corsair H115i Extreme, Fractal Design S28+
  • INCOMPATIBLE: Cooler Master Liquid Pro 280, ARCTIC Liquid Freezer II 280, AORUS RGB AIO 280, be quiet! Pure Loop 280
  • 1x 240mm AIO
  • 2x 120mm AIO
  • 1x 120mm + 1x 140mm AIOs (ex: 1x GPU, 1x CPU)
  • 1x 120mm or 1x 140mm AIO with 1x of the optional 2x 3.5" HDD brackets
  • Bottom Fan Plenum
  • 1x 120mm radiator less than 27mm thick with 15mm thick fan
  • Prefilled AIO are not recommended here, recommended for custom loops only.
  • Maximum of 55mm tall CPU pump blocks
CPU Air Coolers
Fan Mounting
  • 2x 140mm fans in bottom plenum
  • Fans can be a maximum of 27mm thick
  • 2x 140mm fans on top radiators or without radiator.
  • Recommended airflow is bottom intake, top exhaust
  • For any (FAN REMOVED) heat sinks listed above both fans must be populated with high static pressure fans
GPU / PCIe Cards
  • Community Generated GPU Compatibility Lists
  • NVIDIA GTX/RTX GPU Compatibility Spreadsheet [Google Docs]
  • AMD Radeon GPU Compatibility Spreadsheet [Google Docs]
  • Supports three(3) slot wide cards with room between side panel and card for airflow
  • Card is mounted behind motherboard on a PCIe 3.0 16x Flexible Ribbon Riser
  • with Standard Inlet
  • Maximum card height: 133mm (157mm for power connectors)
  • Maximum card length: 328mm
  • Maximum card width: 67mm
  • with Pigtail Inlet
  • Maximum card height: 157mm
  • Maximum card length: 328mm
  • Maximum card width: 67mm
  • Bifurcation riser limits the outer PCIe 16x 2.0 card to 2 slots wide, and inner slot to a single slot card.
  • Bifurcation outer slot maximum card width: 47mm
  • (2x) 2.5" SSD/HDD mounting points behind front panel
  • Optional (4x) 2.5" SSD/HDD mounting bracket [replaces 1x 140mm bottom fan]
  • Maximum two brackets for total of 8x 2.5" SSD/HDDs
  • Optional (1x) 3.5" HDD mount bracket [replaces 1x 140mm bottom fan]
  • Maximum two brackets for (2x) 3.5" HDD in bottom of case
  • Optional (2x) 3.5" HDD mount bracket (top of case)
  • Maximum two brackets for total of 4x 3.5" HDDs in top of case
  • Total maximum of (6x) 3.5" HDDs
Power Supply
  • SFX
  • Corsair SF series
  • SilverStone SST-SX series
  • EVGA SuperNOVA GM series
  • FSP Dagger series
  • SFX-L is supported, however it is a very tight fit and not recommended.
  • Sliger recommends a fan guard grill or custom cables if you do go with SFX-L.
Front Panel I/O
  • One USB 3.1 Gen 2 Type C to USB E header (SS+ 10 Gbit/s)
  • One USB 3.0 Type A to 20-Pin Motherboard Header
  • Two Audio Jacks to standard 9-Pin HD AUDIO header
  • Chassis
  • ASTM-A-653 G30 Zero Spangle 20 Gauge Galvanized Steel
  • Side Panels
  • ASTM B209-10 5052-H32 0.080" Aluminum Sheet
  • Feet
  • Cavity Molded 75 Durometer Nonmarking Black SBR
  • Fine texture powder coated chassis and panels
  • Unpainted chassis, panels, or parts available on request (for DIY paint jobs)
  • Optional custom powder coat finishes, MOQ 25 units
  • Case is unbranded on interior and exterior of chassis.
  • Optional logo screen printing (full color) on front panel for business customers, MOQ 5 units
Case Dimensions (LxWxH)
  • 14.05" x 6.10" x 11.30" - LxWxH
  • 357mm x 155mm x 287mm - LxWxH
  • 15.88 Liters
  • Volume includes case feet and all protruding flanges
  • Base Chassis (includes power cord, riser, front panel, top panel, power switch, etc.)
  • 5.50 lbs
  • Window Panels
  • 1.10 lbs each
  • Vented Panels
  • 0.70 lbs each
  • 1x Kensington Lock Cutout
  • Case
  • 5 Year Warranty [Chassis, USB cables, Power Button, Power Cable, PCIe Riser]
  • Liquid Coolers & Fans
  • 3 Year Warranty
  • Please see our warranty policy for additional conditions, exclusions, and limitations.
  • HTS Tariff Code
  • 8473.30.00.02
  • Country of Origin
  • United States of America
Rev Control
  • SM580-A (7/8/19 - 12/31/19)
  • Initial Release
  • SM580-B (1/1/20 - 8/23/21)
  • Removed rear obround vent pattern.
  • Removed 1-inch holes and plastic caps from rear of case.
  • SM580-C (8/23/21 - 5/1/23)
  • Added Link-Up PCIe 4.0 Riser
  • Chassis subtop changed to rectangular video
  • Discontinued non-vented side panels
  • All cases now get both Pigtail and Standard power cord inlet covers
  • New User Manual