What Ports Are on Lenovo ThinkStation P920 Tower?

The 2017 Lenovo ThinkStation P920 Tower has the following ports available:

• 4 x USB-A
  3 x USB 3.2 Gen 1 (5 Gbps).
  1 x USB 3.2 Gen 1 (5 Gbps) with Always On and Fast Charge.
• 1 x Headset
  Headphone/Microphone combo 3.5mm jack.
• 1 x SD card reader 
  Optional, 15-in-1 card reader.
• 1 x Optical drive.

• 1 x eSATA
  with flex module.
• 2 x Thunderbolt
  with flex module, USB-C form, one supports video-out.
• 1 x USB-C
  USB 3.2 Gen 1 (5 Gbps) with flex module.

• 6 x USB-A
  2 x USB 2.0 (480 Mbps).
  4 x USB 3.2 Gen 1 (5 Gbps).
• 2 x RJ-45
  Gigabit Ethernet.
• 2 x PS/2 ports
  For keyboard and mouse.
• 3 x Audio ports
  line-in, line-out, and microphone 3.5mm jack.
• 1 x Power connector

• 2 x USB-C
  USB 3.2 Gen 2 (10 Gbps, via 2-port USB-C expansion card).
• 1 x Thunderbolt
• 1 x Serial 
  9-pin