They removed your links due to them being to a competitors website and that is not allowed on here. Linking to the manufacturers website is fine but not competing retailers. This forum is paid for and maintained by OCUK so quite reasonably they don't appreciate us linking to their competitors which is a small price to pay for all of the wide ranging knowledge on here.
Right, I will attempt to get you sorted. Let's do the easy one first and that's the AIO (nice choice by the way). I will be referring to your motherboards manual and in particular the layout diagrams on pages 6 and 7 and the descriptions on page 8. You don't have to worry about any voltages for fans because the fan headers on your motherboard only supply the correct voltage. I believe your AIO came with it's own fan hub so plug all the four pin pwm plugs into the hub and then you will only need to use a single fan header on the motherboard. Pug the single PWM plug from the hub into header no 4 in the manual (CPU_FAN1). Plug the pumps power plug which is again a PWM plug into header no 6 in the manual (CPU_FAN2/WP). In your motherboards fan control software either in the bios or a app you may need to set this to water pump/WP so that it is controlled properly. Your ARGB plugs from the Thermalright fans should be able to be daisy chained so plug them into each other and you should have a plug left over which plugs into header No 10 (ADDR_LED2) or header no 26 (ADDR_LED1) in the manual. If your pump can be daisy chained onto the fans even better as you only have two addressable RGB headers and you will need the other for the case fans. Do not use the RGB LED Headers (RGB_LED1) and (RGB_LED2) header 9 and 25 in the manual as they are for the older 12v RGB leds. Modern ones such as yours are 5v. That should be the AIO sorted.
That hub you bought only supplies the power to the fans and is not for the ARGB side. The case fans power plugs can all be plugged into the hub you bought and then connect the hub to the motherboard at either headers 7 (CHA_FAN5/WP), 8 (CHA_FAN3/WP), 21 (CHA_FAN4/WP), 23 (CHA_FAN2/WP) or 30 (CHA_FAN1/WP) whichever one is easiest for you and cable management. Don't forget to plug a sata power connector into the hub from your psu.
The fan's ARGB connectors could be a bit tricky as you only have a single header on the motherboard left spare and I am not sure that it's up to the job of powering the 7 case fans. Ideally you would have a
ARGB hub such as this which is sata powered and plug all the ARGB headers into that. You then only have a single lead to plug into the motherboard at whichever ARGB header you have left, either header 10 (ADDR_LED2) or header 26 (ADDR_LED1). You can then control all of the ARGB fans with the motherboard software. You would have been better of with a combined PWM/ARGB hub for the case fans. As far as I can see OCUK doesn't sell one of these so I can't link you to one but Thermalright does one. If you search for
Thermalright Fan and ARGB HUB×8,ARGB/PWM Hub Controller you should easily find it for less than £8
. That is powered by a sata connector from the psu and sorts out your case fans power and ARGB needs and leaves you only having to connect a single ARGB lead and a single PWM lead to your motherboard as detailed above.
***EDIT*** Crap, I just noticed that you only have 3 pin fans which are inferior to PWM fans. If you haven't already fitted them and are still in the return window do so and order a couple of packs of
Thermalright TL-C12CW-S CPU Fan 120mm White ARGB Case Cooler Fan, 4pin PWM Silent Computer Fan With S-FDB Bearing Included, up to 1500RPM cooling fan(3 quantities) instead. These are the same fans as fitted to your AIO. PWM fans are superior in that they can run slower and more finely tuned than 3 pin fans which are voltage controlled. Also there is a possibility that a 3 pin fan plugged into a 4 pin header may only run at full speed.
Are you still withing the return window for that psu because it's not very good at all. For a extra £15 we could have recommended you a far superior psu with a 10 year warranty. If you do use the one you have make sure it's fan is facing the mesh case panel so it has uninterrupted access to cool air because it's cooling really isn't up to the job.
Hopefully this will get you sorted.