Define Nano S

3.5" HDD/2.5" SSD positions
2    2.5" dedicated SSD unit positions
2 (fits SSDs up to 13 mm thick)
Expansion slots 2
Front ports
2x USB 3.0, Audio in/out, Power button with LED (blue), HDD activity LED (blue), Reset button
Total fan mounts    6
Front fan    2x 120/140 mm (included is 1 Fractal Design Dynamic GP14 fan @ 1000 RPM)
Top fan    2x 120/140 mm
Rear fan    1x 120 mm (included is 1 Fractal Design Dynamic GP12 fan @ 1200 RPM)
Bottom fan    1x 120 mm
Dust filters    Front fans, Bottom fans (ejects from the front of the case)
Cable routing grommets    Yes
Fixed velcro straps    Yes
Captive thumbscrews    Both side panels, rear HDD/SSD brackets
Left side panel     Industrial sound-dampened steel
Right side panel    Industrial sound-dampened steel

Comes with user manual