How can I install a 4TB HDD in my WJCoolMan mini tower?

August 7, 2026 2 answers
Asked by MellowPine47
I bought a prebuilt WJCoolMan mini PC tower and I'm new to working on computers. I want to add a Seagate IronWolf 4TB 3.5-inch hard drive, but I can't find the drive bay shown in most installation videos. The case seems too compact, and I'd like the installation to look neat. Do I need to remove the fans or any other components? I've only removed the front glass panel so far and haven't been able to share photos.

Answers

CloudyMango8
The drive mounting area should be behind the motherboard, near the power supply. Remove the rear panelโ€”the solid panel on the side facing the wallโ€”not the front glass. This case is designed to support up to two 3.5-inch hard drives, so you shouldnโ€™t need to remove the fans. Once the panel is off, you should find mounting points where the drive can be secured neatly.

MellowPine47: I didnโ€™t realize the rear panel could be opened. I had only removed the front glass, so Iโ€™ll check behind the motherboard and try mounting it there.

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QuietJasper21
Some versions of this case support two 3.5-inch drives or up to three 2.5-inch drives. Take off the back panel and look for the drive brackets or screw holes beside the power supply. After mounting the HDD, connect a SATA data cable to the motherboard and a SATA power connector from the power supply. You shouldnโ€™t have to disassemble the fans.
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