The n400 nse-400-kkn2 seems to have a well the mb sits in. do the standoffs raise the board enough so that side facing sata ports can be used?

standoffs raise is standard like most case

Will the N400 support a standard ATX motherboard comfortably??

MAYBE!If the mother board is an ATX and has horizontal connector on the front edge than NO! the N400 has a recessed motherboard tray, that blocks horizontal connectors on an ATX board.!Amazon should put a warning in their description!WHY CoolerMaster?

Can it fit a evga geforce gtx 750ti sc 2gb gddr5 gpu?

It can fit a GTX 980 Ti. Most 750Ti's I've ever seen, in-fact all of them, have been shorter than the mainboard. So you'll have more than enough room...though why not go N200 and mATX if you're going for a small and low powered GPU? I've fit a 980Ti in an N200 as well. Hope that helps!

Can I put a hyper 212 in it

Yes. I have two Hyper212s on AMD Ryzen AM4 processors in two different N400 cases

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Cooler Master コスモス II - ウルトラタワーコンピュータケースアルミニウムとスチールのボディ( RC-1200-KKN1) MID TOWER NSE-400-KKN2

Cooler Master コスモス II - ウルトラタワーコンピュータケースアルミニウムとスチールのボディ( RC-1200-KKN1) MID TOWER NSE-400-KKN2

Product ID: 742333069

Details

Brand
Cooler Master
Motherboard Compatability
Mini ITX
Case Type
Full Tower
Recommended Uses For Product
Business
Color
N400
Material
Alloy Steel

🌀Full mesh front panel for max airflow

💧Supports 240mm water cooling radiator

🔧Toolless SSD brackets for easy upgrades

Description

❄️ Stay cool, stay ahead — the ultimate airflow powerhouse for pros who demand more.

WATER COOLING READY - Fits up to 240mm radiators and rear 120mm water cooling for elite thermal control.
DUST FREE PERFORMANCE - 3 strategically placed dust filters ensure your system stays pristine and efficient.
NEXT GEN CONNECTIVITY - Dual USB 3.0 SuperSpeed ports on the front for lightning-fast data transfers.
EFFORTLESS STORAGE EXPANSION - Supports 3 SSDs with toolless brackets for seamless upgrades on the fly.
STRATEGIC VENTILATION MASTERY - Full mesh front panel and 8 fan support keep your rig cool under pressure.

The Cooler Master Cosmos II Ultra Tower combines aluminum and steel for a durable, stylish chassis featuring a full mesh front panel for superior ventilation. It supports up to 8 fans, 240mm water cooling radiators, and 3 SSDs with toolless installation. Equipped with 3 dust filters and dual USB 3.0 ports, it’s engineered for high-performance builds requiring optimal cooling and easy maintenance.

Specifications

Total Usb Ports	2
Compatible Devices	NVIDIA GTX 690, AMD HD 7990
Color Name	N400
Batteries Included	No
Batteries Required	No
Brand	Cooler Master
Manufacturer	Cooler Master USA, Inc.
Item Model Number	NSE-400-KKN2
Model Year	2013
Special Features	Built-In Fan
Material	Alloy Steel Aluminum
Product Dimensions	50.04 x 19.05 x 42.42 cm; 5.62 kg
Item Weight	12.4 Pounds

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Cooler Master コスモス II - ウルトラタワーコンピュータケース アルミニウムとスチールのボディ( RC-1200-KKN1) MID TOWER NSE-400-KKN2

Details

Details

Description

Specifications

Common Questions

Cooler Master コスモス II - ウルトラタワーコンピュータケースアルミニウムとスチールのボディ( RC-1200-KKN1) MID TOWER NSE-400-KKN2