Background to help understand.
The market today is dominated by two different designs of lighting devices. The plain RGB system uses a connector / header with FOUR pins. These supply a common 12 VDC power line and three Ground lines. Along a light strip (or in a fan frame) there are three colours of LED: Red, Green, Blue. In the plain RGB strip all the Reds are connected to the Red Ground line, etc. The controller manipulates each of the three Ground lines to generate thousands of colours that can change over time. But at any one moment all of the strip is the SAME colour.
The more complex Addressable RGB (ADDR RGB, ARGB, or Digital RGB) uses a header with THREE pins: common +5 VDC and Ground lines, and a Digital Control Line. Along the strip those same three LED colours are organized into Nodes. A Node contains one :ED of each colour plus a Control Chip. That chip listens to the Control Lone and responds only to data packets addressed to it, manipulating only it set of three LED's. This at any one moment every Node along the strip can be a different colour, so this system can generate much more complex displays including rainbows, static or moving. NOTE that the Phanteks Halos frames are of this ARGB type, although Phanteks uses the term Digital RGB.
Because the voltage supply and method of control both are so different, these two systems can NOT be mixed in the same circuit.
Mobos come four ways in this area: no headers; only plain RGB; only ARGB; some of each. A mobo can have more than one header of each type, but often they are limited to only one or two of each. To connect several lighting devices, you can get Splitters for either 4-pn plain RGB or 3-pin ARGB systems. The mobo manual normally will tell you the max current a header can supply and you need to consider this in making your multi-strip connections, but that limit normally can handle at least four devices per header.
In lighted fans or "RGB Fans" or "ARGB Fans" the unit contains two devices, really - a fan motor, and some lights on the frame - and there are separate cables for each to go to the relevant headers. OP, you indicate you are not doing it that way; instead, you have non-lighted fans with the Halos frames added. This basically does not change the electrical details. The fan motor connections for mobo fan headers is the name as "normal". The Halos frames need to connect to a Controller box since you have no mobo ARGB header. That box supplies both power and display control. You have asked for a board to plug into a PCIe slot. But the more common way is a separate box and connecting cables that you mount inside your case to do the job. In selecting that, you need to consider three major points:
Plain RGB (4-pin, 12 VDC), or ARGB (3-pin, 5VDC)?
Do box connectors match the ones on your lighting devices (and maybe fan motors) - some boxes and fans use non-"standard" connectors?
How are the displays controlled?
On the last item, there are three common methods of control access. The simplest is a manual box with a few buttons on it to change display type, display speed, and colours. This MAY be included in the Controller as one box, which can make access to it awkward because it is INSIDE you case for connection to the lights, OR the buttons may be on a separate box on a cable that extends outside your case. A second variation is that the button box may be a hand-held battery-powered remote control with many buttons that communicates its settings to the actual controller box inside the case using a radio signal. The third option is a way to connect the Controller Box with a cable to a mobo USB2 header, and install a software utility on your system that you run to communicate instructions to that box from your keyboard. This latter system typically "consumes" one mobo USB2 header (that has two USB2 ports in it), but you may have an unused header for this.
For you, OP, you could buy fans with either plain RGB or ARGB lights in the frames, or unlighted fans and add the Phanteks Halos frames to them. (Halos comes only in ARGB type.) VERY often you can buy a complete kit of lighted fans plus Controller box that operate completely independent of the mobo. IF you go with the Halos frames, consider the Phanteks Digital RGB LED Starter Kit that contains the Controller Box and cables, a couple of light strips, and a manual button box on a cable you can feed out of the case for easy access.
Notes on the two cards linked above in other posts. The first (Akasa Vega) is a FOUR-pin plain RGB controller with a single control button on the back edge. The second (Akasa Soho) is a THREE-pin ARGB C0ntroller with, again, a single button on the back. In each case it appears that the board has several pre-set displays and the single button allows you to step though them all and find the one you want. Systems with separate boxes and control buttons generally offer more control flexibiltiity; those with the button box separate from the Contrloler on a cable, or with a remote control hand-held box, are more convenient for access to those controls.