ASRock J5005-ITX

Key features of this board are:
 * Intel J5005 Goldmont-plus processor with
 * dual DDR4 SO-DIMM memory
 * integrated Intel UHD Graphics 605, supporting 4k at 60 Hz
 * 1 PCIe 2.0 x1, 1 M.2 (Key E)
 * Graphics Output Options: D-Sub, HDMI, DVI-D
 * 7.1 CH HD Audio (Realtek ALC892 Audio Codec), ELNA Audio Caps
 * 4 * SATA3
 * 4 * USB 3.1 Gen1 (2 Front, 2 Rear)

Reasons to build a rig using this board could be the combination of:
 * low power CPU with 10 W TDP: if placed in a spacious enough case then it can be run fanless
 * a CPU with SSSE3, and AES instructions, perfect for fast disk encryption or vpn connections
 * an optical SPDIF port allows for digital connection to an external audio amplifier
 * 4 SATA-3 ports provide plenty of storage opportunity
 * capable of 4k graphics: good for HTPCs
 * small ITX form factor

Installation
The installation is per the Gentoo handbook. Follow instructions for:
 * If is emerged with the "experimental" USE flag, then it is possible to set processor family to "Intel Goldmont Plus"
 * Enable the kernel modules for encryption using SSE3 and AES instructions, see Iwd for an example of the options to enable
 * Intel graphics, configuring the drivers for generation 9
 * USB support, configuring xHCI, EHCI, and UHCI
 * Audio according to ALSA and optionally PulseAudio. Make sure to enable build Realtek HD-audio codec support

Portage make.conf
Many options of Gentoo are set in. Some of the key aspects are: