BigBoss2020

It seems all the good jokes were already taken, so I'll just leave.

Thank you! My god first time building is exhausting

Thank you! My god first time building is exhausting

yup, used for soldering.

flux is normal, so for the most part no. 

If you look at the details tab of the specifications, they should list it in a similar fashion. The general view is typically pretty lacking. Worst case, download the manual and check there. 

It does:
 
2x M.2 slots (Key M) Supports up to PCIe 3.0 x4 and SATA 6Gb/s M2_1 slot supports 2242/ 2260 /2280/ 22110 storage devices1 M2_2 slot supports 2242/ 2260 /2280 storage devices2 Intel® Optane™ Memory Ready*** 3 SATA2 will be unavailable when installing M.2 SATA SSD in the M2_1 slot. SATA5 & SATA6 will be unavailable when installing M.2 SATA/PCIe SSD in the M2_2 slot. Both M.2 Slots support M key PCIe or SATA SSDs. Certain ports are disabled whent hey're installed. 

It makes a world of difference not just in loading times for games, but also the general snappiness of the system. A mechanical hard drive would just gimp the potential performance you should be seeing out of new hardware.
 
If this is a gaming system you're looking to build, here's what I'd recommend:
PCPartPicker Part List Type Item Price CPU AMD Ryzen 5 3600 3.6 GHz 6-Core Processor $173.99 @ Amazon Motherboard MSI B550-A PRO ATX AM4 Motherboard $139.99 @ Newegg Memory Crucial Ballistix 16 GB (2 x 8 GB) DDR4-3600 CL16 Memory $74.99 @ B&H Storage Kingston A2000 1 TB M.2-2280 NVME Solid State Drive $119.99 @ Amazon Video Card NVIDIA GeForce RTX 2060 SUPER 8 GB Video Card $399.99 @ Best Buy Case Corsair 275R Airflow ATX Mid Tower Case $79.98 @ Amazon Power Supply be quiet! Straight Power 11 550 W 80+ Gold Certified Fully Modular ATX Power Supply $109.90 @ B&H   Prices include shipping, taxes, rebates, and discounts     Total $1098.83   Generated by PCPartPicker 2020-08-07 07:57 EDT-0400   I'm actually not sure how you managed to fit a 10600K with that board and cooler into the same $1100 budget, but anyway.
Unless you also plan on streaming though, I'd also consider a 5700XT instead of the 2060 Super, as it does offer a decent bit more raw performance. Also the 2060S could make more sense if you plan on playing future AAA titles at 4K for example, because of DLSS 2.0, which would aid the 2060S in actually performing better than the 5700XT.

We don't know what the power consumption for that gpu is. 
But I would assume it'll be a little worse or better possibly since they're moving to 7nm. 
Either way this current build consumes around 300ish watts so you still have headroom. 

budget? 
a 550w is more then enough for this, psu calculators are incorrect most if not, all the times.