Lenovo ThinkStation P520c Workstation

Front Ports:
2x USB 3.2 Gen 1
1x headphone (3.5mm)
1x microphone (3.5mm)

Rear Ports:
2x USB 2.0
4x USB 3.2 Gen 1
1x Ethernet (RJ-45)
1x line-in (3.5mm)
1x line-out (3.5mm)
1x microphone (3.5mm)
2x PS/2 ports (keyboard / mouse)

Interno: 

Slot 1: PCIe 3.0 x16, full height, full length, 75W, double-width, by CPU
Slot 2: PCIe 3.0 x8, full height, full length, 25W, by CPU
Slot 3: PCIe 3.0 x16, full height, full length, 75W, by CPU
Slot 4: PCIe 3.0 x4, full height, half length, 25W, by PCH
2x M.2 SSD (onboard);

2x Baías SATA 3.5″ internas
6x SATA 6.0Gb/s