Very simple MB. Z170 PRO GAMING is much more better layout
*Power phases*
That's my number one consideration when I see a board.
Then the heatsink, then the MOSFET ,choke and cap quality/ capacity.
Why do motherboards need even one LED?
1. Easy/ cheap to implement, potent to market. +Differentiation.
2. Aesthetics/ bling.
3. Debugging/ status LEDs
4. They also draw negligible power.
If you've seen boards with debug code LEDs.... you'll know. They can be a life saver when something goes wrong and your stuff won't boot. Ask any IT guy who's been using PCI - card BIOS code debuggers for decades. This enables us end users to not have to go looking for such a card when something blows up.
1. PS/2 doesn't need polling as compared to USB. Input on cheap 125Hz mice is highly responsive on such mouses ( I read computer mouse ->(plural)--> mouses and not mice! )
2. A lot of legacy and industrial hardware comes in PS/2 flavors. For example, in India, TVS is the biggest supplier of mechanical Cherry blue switch keyboards and on government tenders and contracts, they've elected to supply the PS/2 keyboard instead of the USB version.
I used their KB. One can buy a full fledged PS/2 Cherry blue mech KB for 24$, that's USD.
I'm now on a 135$ CM Quickfire. Not everyone can afford one.