Just upgraded my old Beebox N3150 with one of these and was well worth the expense.
Add RAM, storage and OS.
Intel Celeron J3455
HD Graphics 500
HDMI 2.0 (4k@60hz and HD audio passthrough in Windows and Linux)
2 x RAM slots (Max 8Gb DDR3L-1600/1866, 1.35 V, dual-channel. No need for 2 sticks for smooth 4k playback)
2.5″ SATA slot (up to 9.5mm)
Gigabit Ethernet (Realtek)
802.11ac m.2 2230-size WiFi card preinstalled
USB 3.0 x 4 (One for charging even when the NUC is switched off)
USB 2.0 x 2 headers (Internal)
Headphone jack 3.5mm
HDMI CEC (Finally a low cost Intel NUC with CEC and header also supports Pulse 8 if required)
AC adapter with 5 region plugs.
The MegaChips LSPCon also supports HDR too, so should give Intel an option for a software update for the HDMI 2 ports to support it.