The Lian Li UNI FAN SL Infinity 120 three-pack combines strong airflow, quiet operation, infinity mirror lighting, and a cable-saving daisy-chain design. This guide covers what comes in the box, how to connect the fans, mount them in a PC case, wire the controller, and customize the lighting through Lian Li's L-Connect software.
The Lian Li UNI FAN SL Infinity 120 is a 120 mm addressable RGB fan designed for builders who want strong cooling, distinctive lighting, and fewer visible cables. The three-pack shown in the video uses an all-white finish and includes a dedicated controller.
Although this fan model has been available for several years, its integrated connection system remains one of its most useful features. Instead of running a separate power and lighting cable from every fan, the fans lock together and operate as a connected group.
The three-pack includes the main parts needed to install and control the fans. A screwdriver is still required for mounting.
The controller can manage multiple groups of compatible fans. According to the video, the controller can support up to 16 fans, depending on how the groups are configured.
The fans feel solid and substantial rather than lightweight or inexpensive. Their most recognizable design feature is the infinity mirror lighting built into the sides and center areas.
The mirrored surfaces create a layered lighting effect when the RGB is active. They also show fingerprints easily, so it is a good idea to avoid touching the reflective areas during installation.
The daisy-chain system is one of the easiest parts of the installation. Each fan has grooves and connection points that align with the adjacent fan.
Once connected, the three fans act as one group. Only one combined fan and lighting cable needs to run from the group to the controller.
The video notes that up to four fans may be connected in one group, although only three are required for this installation.
Before working inside the computer, shut it down completely, turn off the power supply, and disconnect the power cable. Remove the glass or side panel so the existing fans and mounting bracket can be accessed.
In the video, an existing three-fan assembly is removed from a Lian Li O11D Mini V2 Flow. The exact removal process will vary by case, but this installation requires removing two screws and disconnecting the existing fan wiring.
The original fans can be reused elsewhere in the case. In this build, two of the removed fans were later installed in other positions, bringing the case to a total of nine fans.
The connected three-fan group is mounted to the case's removable bracket. Orientation is important because it determines airflow direction, cable placement, and which infinity mirror surfaces remain visible.
For the O11D Mini V2 Flow bracket shown in the video, the center fan should be aligned and secured first. Starting with the outside fans may cause the mounting holes to become misaligned.
The combined fan and RGB cable should be routed through the case's cable-management openings and into the rear chamber.
In the O11D Mini V2 Flow, the cable can follow the same lower compartment used for GPU power cables. This keeps the visible side of the case clean and prevents the fan cable from crossing the motherboard area.
After mounting the fan bracket, clean the infinity mirror surfaces with a microfiber cloth. This removes fingerprints before the glass panels are reinstalled.
The fan group connects to one of the available ports on the included controller. The connector is keyed and should only fit in the correct orientation.
The controller can be mounted in the rear chamber using the included adhesive strip. Choose a location that provides access to the controller ports while allowing the side panel to close without pressing against the cables.
| Connection | Purpose |
|---|---|
| Fan group cable | Connects the daisy-chained fans to the controller |
| Two power connections | Supplies power to the controller, fans, and lighting |
| Internal USB header | Allows the L-Connect software to communicate with the controller |
| Motherboard fan header | Provides fan speed control and synchronization options |
| ARGB header | Allows lighting synchronization with compatible motherboard software |
The USB, fan, and ARGB headers are commonly located near the bottom edge of the motherboard, although the exact location varies by model. Consult the motherboard manual before connecting anything.
Before reinstalling every case panel, reconnect the PC and briefly power it on. Confirm that all three fans spin and that the ARGB lighting activates.
The fans in the video produced noticeable airflow immediately and illuminated correctly. Once the test is complete, the glass and exterior panels can be reinstalled.
Lian Li's L-Connect software provides control over the fans and lighting. The software can be used to select colors, effects, brightness, and other fan settings.
The video demonstrates a static color combination using blue, purple, and green, along with several preset lighting effects.
The integrated fan connection is the biggest cable-management advantage. A conventional three-fan installation may require separate fan and lighting cables from every fan.
With the UNI FAN system, the three-fan group uses only one cable to the controller. The controller then connects to the motherboard through USB, ARGB, and fan-header cables.
The result is a cleaner interior, fewer cables behind the motherboard tray, and a simpler installation process.
| Pros | Considerations |
|---|---|
| Attractive infinity mirror lighting | Mirror surfaces show fingerprints |
| Simple fan-to-fan daisy chaining | Controller requires several motherboard connections |
| Only one cable from each fan group | Two power supply connections are required |
| Controller included with the three-pack | Installation details vary by PC case |
| Strong airflow and quiet operation | Software is needed for full lighting control |
| Multiple RGB presets | Careful cable routing is still necessary |
The Lian Li UNI FAN SL Infinity 120 three-pack offers an effective combination of cooling performance, quiet operation, attractive lighting, and simplified wiring.
The daisy-chain design is especially valuable because the fans connect directly to one another without separate cables between each unit. The included controller and L-Connect software also provide a wide range of lighting and fan-control options.
At the price discussed in the video, the set provides strong value for builders who want premium-looking ARGB fans without filling the case with extra wiring.
0:05 This is the all-white Lian Li UNI FAN SL Infinity 120 mm three-pack ARGB fan set. Today, we are going to install it in this PC, and I am taking you along for the process.
0:19 This fan set is not new. It has been available for approximately four years, but I thought it was worth revisiting because of its impressive features.
0:27 For example, the three fans can be daisy-chained together without additional wires between them. The set also includes a controller.
0:37 Let us unbox and install the fans. While we are working, leave a comment and let me know what you think.
0:43 Make sure to like, share, and subscribe. Help me reach 100,000 subscribers because I am almost there. Thank you.
0:58 There are several cables included in the box.
1:06 We also have a thank-you card, which is typical for Lian Li products.
1:13 Here is the first fan, the second fan, and the third fan.
1:22 The instruction manual appears detailed and also includes information about the software.
1:31 The package includes mounting screws and, most importantly, the controller.
1:48 Here is the controller for the fan set.
1:57 It can control more than one group of fans. According to the product information discussed in the video, the controller can support up to 16 compatible fans.
2:10 The package also includes adhesive mounting material, such as 3M tape, so the controller can be secured to the rear of the PC case.
2:20 Be aware that the controller requires two power supply connections.
2:26 The box also contains additional cords and wires.
2:31 Let us unbox one of the fans and examine its design.
2:40 The build quality is good, and the fan does not feel inexpensive.
2:42 The fan includes infinity mirror surfaces. I will remove the protective film so you can see them.
2:48 There is a mirror on the side, another mirror on the top, and an additional reflective section on the opposite side.
3:13 The fans feel solid and relatively heavy. They do not feel cheaply made, and I like the design.
3:23 [The remaining fans are unboxed.]
4:13 That is everything included with the Lian Li UNI FAN SL Infinity 120 mm ARGB fan set.
4:22 The price discussed in the video is under $80, which is a good value considering everything included.
4:28 Let me show you how to daisy-chain the fans. This is very simple and may be the easiest part of the installation.
4:36 All the fans must be positioned in the same orientation. You can place all the labels facing upward or all the mirror surfaces facing upward, but the orientation must be consistent.
4:44 The raised notches on one fan slide into the grooves on the next fan.
4:48 Align the notch and groove on each side.
5:03 Slide the first two fans together until they lock into place.
5:10 The connection takes only a few seconds.
5:15 Repeat the same process with the third fan.
5:20 The three-fan group is now assembled.
5:25 I believe up to four fans can be connected in one group, but we only need three for this installation.
5:32 We will now connect the cable that supplies power and RGB control to the fan group.
5:36 This cable will later connect to the controller.
5:43 Attach the cable to the connector on the side of the fan group.
5:50 The cable slides into place easily.
5:55 Now we need to shut down the PC, remove the glass panel, and install the fans.
6:05 The first step is removing the existing fan assembly.
6:08 In this case, the bracket is held in place by two screws.
6:14 Be careful not to lose the screws.
6:22 The fan assembly has cables connected at the front and rear.
6:31 Disconnect the wiring and remove the bracket.
6:36 We will reuse the existing bracket. The old fans will be removed, and the new fan group will be installed in their place.
6:46 The exact procedure will vary depending on your PC case.
7:11 This is the bracket we are keeping. The original fans are being removed.
7:16 I may reuse some of the original fans elsewhere in the case. They are quiet, powerful, and still useful.
7:30 Position the bracket against the new three-fan group.
7:33 When the bracket is flipped and installed in the case, the fans will face this direction.
7:39 The infinity mirror surfaces will remain visible from inside the case.
7:47 We can now mount the connected fans to the bracket.
7:55 For this particular bracket, it is important to align and secure the center fan first.
8:00 This detail applies to the bracket used in my Lian Li O11D Mini V2 Flow. Other cases may use a different mounting system.
8:14 I like this removable bracket because it makes installation and removal easier.
8:22 Align the middle fan first. Once it is secured, the remaining mounting holes should line up more easily.
8:28 Starting with the outside fans may prevent the center holes from aligning correctly.
8:47 The fan assembly will be installed in this orientation.
8:49 We need to reverse the cable connector so it faces the correct direction.
9:04 Slide the connector onto the opposite side. The fan group is now ready for installation.
9:11 The next step is routing the fan cable.
9:14 We will route it underneath the visible chamber.
9:21 The Lian Li O11D Mini V2 Flow includes a lower cable compartment that also carries the GPU power cables.
9:29 Push the fan cable through this opening so it remains hidden.
9:37 Secure the fan bracket using the two case screws.
9:48 Before continuing, wipe the infinity mirror surfaces with a clean microfiber cloth.
9:55 Remove any fingerprints or marks from the sides and front.
10:01 Once the panels are reinstalled, we should not need to touch the mirror surfaces again.
10:11 This cable carries power and RGB control for the fan group.
10:16 Remove the rear panel so the cable can be routed into the controller area.
10:21 Feed the cable through the case and confirm that it is routed in the correct direction.
10:29 The cable is now in place.
10:34 This is the controller box.
10:37 Connect the cable from the three-fan group to any available controller port.
10:42 I am using port one because this is the first group connected to the controller.
10:47 The connector is keyed and only fits correctly in one direction.
10:56 Next, connect the controller's power cables.
11:07 The controller must be connected to an internal USB header on the motherboard.
11:19 To synchronize fan control and RGB lighting with the motherboard, connect the controller to the appropriate fan and ARGB headers.
11:40 Route the internal USB cable to the other side of the case.
11:54 I should have moved another component out of the way first, but it is not a major problem. It is held in place by only two screws.
12:02 I am leaving this part in the video because PC building and upgrading do not always go perfectly. Small mistakes and adjustments are normal.
12:19 Find the routed USB cable in the rear chamber.
12:26 Locate an available internal USB header on the motherboard.
12:34 This motherboard has more than one compatible USB header, so I will connect the cable to one of them.
12:39 The fan header and RGB cable from the controller are connected here.
12:48 The internal USB cable is connected to the USB header.
12:53 Another compatible USB header is also available, but either location will work.
13:01 With the fan, RGB, and USB connections installed, the wiring is complete.
13:05 Reinstall the removable components and power on the computer to test the installation.
13:17 Let us turn it on and confirm that everything works.
13:27 The lighting is active.
13:33 Everything is working correctly, and the fans are moving a noticeable amount of air.
13:39 Reinstall the front and side panels to complete the physical installation.
13:43 The Lian Li SL Infinity fans are installed, and they look excellent.
13:50 The setup was relatively simple. Three controller cables connect to the motherboard:
13:58 These connections are located near the bottom of this motherboard.
14:01 Do not forget the controller's two power supply connections.
14:07 The installation is especially straightforward in a compatible Lian Li case.
14:10 I am using the Lian Li O11D Mini V2 Flow, and I will include a link to that case review at the end of the video.
14:19 I reused two of the fans removed earlier and installed them elsewhere in the case. The completed build now has nine fans.
14:25 The case looks cool and maintains cool operating temperatures.
14:29 Lian Li's L-Connect software is easy to download and use.
14:34 I am currently using a static lighting mode with blue, purple, and green colors.
14:40 The software also includes many preset lighting modes.
16:16 We will now return to the static color mode.
16:21 L-Connect provides many features, although this video focuses primarily on the RGB lighting.
16:30 These fans look impressive, provide strong airflow, and operate quietly.
16:37 At the price discussed in the video, the three-pack provides strong value.
16:42 The daisy-chain connection is an excellent design. The fans snap together without separate cables between each unit.
16:48 Only one cable runs from the connected fan group to the controller.
16:52 The controller then connects to the motherboard through USB, RGB, and fan-header cables.
17:01 If you are looking for PC fans with attractive ARGB lighting, strong airflow, and simplified wiring, this fan set is worth considering.
17:13 Product links will be included in the video description.
17:15 I want to thank all YouTube members and Patreon supporters.
17:19 Thank you for watching. Make sure to like, share, and subscribe, and help me reach 100,000 subscribers.
17:30 Have a great day.
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