1. Uvod
The YUNZII B75 PRO is a 75% layout wireless mechanical keyboard designed for enhanced typing and gaming experiences. It features a gasket-mounted structure, hot-swappable switches, multi-mode connectivity, and customizable RGB backlighting. This manual provides detailed instructions for setup, operation, maintenance, and troubleshooting to ensure optimal use of your keyboard.

Figure 1: YUNZII B75 PRO Wireless Mechanical Keyboard (Pink)
2. Sadržaj paketa
Molimo Vas da provjerite da li se u Vašem paketu nalaze svi artikli:
- YUNZII B75 PRO Keyboard x1
- USB kabel (tip-C) x1
- Alat za izvlačenje prekidača i kapica tipki x1
- Function Card & User Manual x1
- 2.4G adapter x1
- Poklopac za prašinu x1
- Dodatne tipke i prekidači

Figure 2: Package Contents of the YUNZII B75 PRO
3. Podešavanje
3.1 Načini povezivanja
The B75 PRO supports three connection modes: Bluetooth, 2.4GHz Wireless, and Wired (USB Type-C).
- Ožičeni način: Connect the keyboard directly to your device using the provided USB Type-C cable.
- 2.4GHz bežični način rada: Insert the 2.4G dongle into your device's USB port. Switch the keyboard to 2.4G mode using the switch on the side.
- Bluetooth način rada: Switch the keyboard to BT mode. On your device, search for available Bluetooth devices and select 'YUNZII B75 PRO' to pair.

Slika 3: Tri načina povezivanja
3.2 Informacije o bateriji
The keyboard is equipped with a built-in 4000mAh high-capacity battery, providing extended usage in wireless modes. To check the battery level in wireless mode, press Fn + Ctrl.

Slika 4: Indikator nivoa baterije
3.3 Kompatibilnost
The YUNZII B75 PRO is compatible with both Windows and macOS operating systems. Switch between modes using Fn+A za Windows i Fn + S za Mac.

Slika 5: Kompatibilnost operativnog sistema
4. Uputstvo za upotrebu
4.1 Key Layout and Multimedia Knob
The B75 PRO features a 75% layout with 82 keycaps and a multi-function knob. This compact design includes number keys, function keys, and arrow keys. The knob allows for quick adjustments:
- Dugi pritisak: Switch between Multimedia Mode and RGB Mode.
- Rotiranje u multimedijalnom režimu: Adjust volume (clockwise for volume up, counter-clockwise for volume down).
- Short Press in Multimedia Mode: Mute/unmute volume.
- Rotate in RGB Mode: Adjust RGB backlight brightness.
- Short Press in RGB Mode: Promijenite RGB efekat.

Figure 6: Multimedia Knob Functions
4.2 RGB pozadinsko osvjetljenje
The keyboard features 16.8 million RGB backlighting with over 20 built-in modes and south-facing LEDs. You can customize the lighting effects using the following key combinations:
- Fn + Kraj: Promijenite boju pozadinskog osvjetljenja.
- Fn + Umetni: Promijenite efekat pozadinskog osvjetljenja.

Figure 7: RGB Backlight Controls
4.3 Programabilni softver
The B75 PRO supports programmable web software for Windows and Mac systems, allowing you to:
- Remap keys for improved efficiency.
- Edit macros to combine multiple shortcuts into one keystroke.
- Prilagodite RGB svjetlosne efekte.

Figure 8: Programmable Software Features
4.4 FN Key Combinations (Windows Quick Start)
Utilize the Function (Fn) key for quick access to various commands:
| Kombinacija | Funkcija |
|---|---|
| Fn+F1 | Kompjuter |
| Fn+F2 | Početna stranica |
| Fn+F3 | Kalkulator |
| Fn+F4 | Player |
| Fn+F5 | Prethodna pjesma |
| Fn+F6 | Next Song |
| Fn+F7 | Pusti/Pauza |
| Fn+F8 | Stani |
| Fn+F9 | Mute |
| Fn+F10 | Volumen ↓ |
| Fn+F11 | Volumen ↑ |
| Fn+F12 |

Figure 9: FN Key Functions
5. Održavanje
5.1 Prekidači koji se mogu mijenjati tokom rada
The B75 PRO features hot-swappable sockets compatible with 3-pin/5-pin mechanical switches, allowing you to easily change switches without soldering. Use the provided switch puller to remove and install switches.

Slika 10: Prekidači koji se mogu brzo mijenjati
5.2 Čišćenje
Da biste očistili tastaturu, nježno obrišite tipke i kućište mekom,amp cloth. For deeper cleaning, remove keycaps using the keycap puller and clean the switches and plate with compressed air or a soft brush. Ensure the keyboard is powered off and disconnected before cleaning.
6. Otkrivanje problema
Evo rješenja za uobičajene probleme s kojima se možete susresti:
- Q1: Why is the keyboard Red light flashing below the spacebar?
A: When the battery is lower than 15%, the Spacebar will flash red slowly. When charging, the Spacebar will stay green. After charging is complete, the Spacebar restores to the normal RGB mode. - Q2: The keyboard doesn't work and doesn't charge.
A: Please download the firmware (link not provided, refer to manufacturer's website) and try updating it. Stop the software from running in the background and then update the firmware. Try it in wired mode. - Q3: The Win button doesn't work.
A: Please try pressing Fn+WIN to unlock it. This should resolve the issue you are experiencing with the WIN key not working. - Q4: How to solve the problem of the spacebar key being stuck and not working?
A: Please follow these steps to reset the spacebar stabilizer:- Remove Keycap: Use the keycap puller to gently pull the spacebar keycap.
- Remove Stabilizer: Locate the stabilizer inside the plastic housings. Carefully unclip both ends of the stabilizer and lift it out.
- Reinstall Stabilizer: Place the stabilizer back into the housings, ensuring both ends snap securely into the clips.
- Reattach Keycap.
- Test: Press the spacebar to check if it moves smoothly.

Figure 11: Common Troubleshooting Steps
7. Specifikacije
| Feature | Detalj |
|---|---|
| Broj modela | B75 PRO |
| Layout | 75% (82 tipki + 1 dugme) |
| Povezivanje | Bluetooth / Type-C / 2.4GHz Wireless |
| Tip prekidača | Hot Swappable Mechanical (Milk Switch, Pre-lubed linear) |
| Pozadinsko osvetljenje | RGB (16.8 Million Colors, South-facing LEDs) |
| Kapacitet baterije | 4000mAh |
| Kompatibilni uređaji | Laptop, MAC, PC, Smartphone, Tablet |
| Operating Force (Milk Switch) | 45±10gf |
| Pre-Travel (Milk Switch) | 2.0±0.6 mm |
| Total Travel (Milk Switch) | 4.0mm |
| Težina artikla | 1.98 funte |
| Dimenzije paketa | 15.75 x 6.57 x 2.44 inča |

Figure 12: Milk Linear Switch Specifications
8. Garancija i podrška
For warranty information and customer support, please refer to the official YUNZII website or contact the seller directly through the platform where the product was purchased. Keep your purchase receipt for warranty claims.

Slika 13: Informacije o korisničkoj podršci
9. Videozapisi proizvoda
Watch these official product videos for additional information and demonstrations:
Sound Test of YUNZII B75 PRO Keyboard Milk V2 Switch
This video demonstrates the typing sound of the YUNZII B75 PRO keyboard with Milk V2 switches, highlighting its creamy acoustic profile.
RGB Backlight of YUNZII B75 PRO Wireless Gaming Keyboard
This video showcases the various RGB backlight modes and dynamic effects available on the YUNZII B75 PRO keyboard.
YUNZII B75 Mechanical Keyboard, 75% Layout with Knob, Pink
Gotovoview video demonstrating the YUNZII B75 Mechanical Keyboard, highlighting its 75% layout, knob functionality, and pink color variant.