Because it has a PCIe x16 slot, you can add a low-profile GPU like a GTX 1050 Ti or GT 1030, provided your power supply can handle it.

: Pinout diagrams for connecting the power button and LEDs.

: 6x USB 2.0 (rear), 1x Ethernet (RJ-45), Audio Jacks (Line-in, Line-out, Mic). Common Troubleshooting & Installation

– sometimes OEM service manuals are uploaded there.