What cooling options does the Thetis case support?

The Thetis case supports one pre-installed 120mm LED fan at the rear and has space for two 120mm fans or a 240mm radiator at the top.

What types of motherboards are compatible with the Thetis case?

The Thetis case is compatible with ATX, Micro-ATX, and Mini-ITX motherboards.

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raijintek Thetis Window Black Desktop Computer Case Box of Computer (Desktop, PC, Aluminium, SPCC, ATX, Micro-ATX, Mini-ITX, Black, 1.5 mm)

MEET THE THETIS, RAIJINTEK'S NEW ALUMINIUM ATX CASE: It is an upgraded version of STYX and has a remarkably elegant appearance with good compatibility with hardware.
COMPATIBILITY: The Thetis is compatible with regular/standard ATX Power supplies, 280mm VGA cards, 170mm CPU coolers.
PRE-INSTALLED FAN: There is one 120mm LED fan pre-installed at the rear and space for 2*120mm fan (or 240mm radiator) at the top.
GREAT DESIGN: The Thetis is entirely black coated inside, with aluminium colour hair-silk anodized appearance and high quality 3mm tempered glass side panels.
OTHER FEATURES: The Thetis satisfies not only your request of looking for an elegant chassis, but also the features to install a comprehensive system.