1 x RJ-45 Gigabit Ethernet (Realtek RTL8111GN/H). Audio: HD Audio jacks (Line-in, Line-out, Microphone).
: The manual details specific I/O mappings, such as identifying the audio line-out connector for external speakers or headphones [14]. ib250mh motherboard manual
Install the I/O shield into the back cutout of your computer case. 1 x RJ-45 Gigabit Ethernet (Realtek RTL8111GN/H)