Rackmount chassis Server case 19 inch ATX microATX 3U N400D

DrivesExternal Bay: 3x5.25" Internal Bay: 4x3.5

Motherboard SizeM/B size: Use ATX M/B support 2 x 5.25 / use Micro ATX M/B support 3 x 5.25

Dimension19.00 * 5.25 * 15.35 inches / 482 * 133.3 * 400 (mm)