Intel® C242 Quad LAN with Intel® Ethernet Controller I210-AT 4-Core Intel® Xeon™ E-2224 (3.50 GHz, 12M, LGA1151) 32GB Unbuffered ECC UDIMM, DDR4-3200MHz, 1 PCIe 3.0 x16 M.2 Interface: 1 PCIe 3.0 x4 M.2 Form Factor: 2280/22110 90° Rotatable HDD Cage Whisper-Quiet (<25dB) Kensington Lock Support Front I/O Supports 2x USB 3.0 1x Optional Front Intake 8cm (2800 RPM) PWM Fan Mini-Tower Chassis Supports Micro-ATX Motherboard, Size 9.6" x 9.6" 400W Gold Level Certified High-Efficiency Power Supply 1x Rear 9cm (2050 RPM) PWM Fan 2x 5.25" External HDD Drive Bays & 4x 3.5" Internal HDD Drive Bays M.2 Key: M-Key Double Height Connector