6 to 10 USB ports (mix of USB 2.0 and USB 3.0 depending on revision). 1 x DisplayPort. 1 x VGA port. 1 x Serial (RS-232) port. PS/2 ports for keyboard and mouse. Note on Newer Revisions (2021 context) HP Desktop PCs - Motherboard Specifications, Row
At least two to four SATA III (6Gb/s) connectors for internal HDDs and SSDs. hp fxn1 e93839 motherboard specs 2021
The rear panel offers a variety of legacy and standard business ports: : VGA, DisplayPort, and sometimes DVI. 6 to 10 USB ports (mix of USB 2
The HP FXN1 E93839 is an OEM (Original Equipment Manufacturer) motherboard, commonly found in business-grade desktop towers like the HP ProDesk 600 G1 EliteDesk 800 G1 1 x Serial (RS-232) port
HP removed the "Overclocking" and "Advanced RAM timings" menus in all 2021 BIOS updates for this board.