Key Specifications
Choose one or multiple features to search for items that have the same specifications.| Ports & interfaces | |
| ATX Power connector (24-pin) | ![]() |
| Floppy disk drive connector | ![]() |
| PCI Express connector | ![]() |
| Motherboard power connector | 24-pin ATX |
| Floppy drive power connector | 1 |
| Number of SATA power connectors | 2 |
| Peripheral (Molex) power connectors (4-pin) | 3 |
| EPS power connector (8-pin) | ![]() |
| ATX power connector (20+4 pin) | ![]() |
| PCI Express power connectors (8-pin) | 2 |
| CPU power connector (4+4 pin) | ![]() |
| PCI Express power connectors (6+2 pin) | 2 |
| Cabling type | Non-Modular |
| Number of PATA power connectors | 3 |
| Motherboard power cable length | 60 cm |
| CPU power cable length | 65 cm |
| EPS power connector (4+4 pin) | ![]() |
| Weight & dimensions | |
| Height | 150 mm |
| Width | 86 mm |
| Depth | 150 mm |
| Energy management | |
| Peak power | 750 W |
| Input current | 10 A |
| Nominal power | 750 W |
| Efficiency | 85 % |
| Power protection features | Over current, Over power, Over voltage, Short circuit, Under temperature, Under voltage |
| Power Factor Correction (PFC) type | Active |
| Combined power (+3.3V) | 100 W |
| Combined power (+12V) | 750 W |
| Combined power (+5V) | 100 W |
| Combined power (-12V) | 3.6 W |
| Combined power (+5Vsb) | 15 W |
| Max output current (+3.3V) | 20 A |
| Max output current (+12V) | 62.5 A |
| Max output current (+5V) | 20 A |
| Max output current (-12V) | 0.3 A |
| Max output current (+5Vsb) | 3 A |
| AC input frequency | 50/60 Hz |
| AC input voltage | 100 - 240 V |
| Total power | 750 W |
| Certificates | |
| Certification | CE/CB/cTUVus/TÜV/FCC/BSMI/CCC/KCC/SAA+RCM |
| RoHS compliance | ![]() |
| 80 PLUS certification | 80 PLUS Bronze |
| Design | |
| Product colour | Black |
| Illumination | ![]() |
| Number of fans | 1 fan(s) |
| Fan diameter | 135 mm |
| Fan speed | 0 - 1600 RPM |
| Performance | |
| Mean time between failures (MTBF) | 100000 h |
| Form factor | ATX |
| Noise level | 40.1 dB |
| Purpose | PC |
| Supported motherboard form factors | ATX |
| ATX version | 3.1 |
| Silent mode | ![]() |
| Power supply unit (PSU) form factor | ATX |
| EAN | 4718466019660 |
The Lian Li RB-750B is an ATX power supply unit engineered to provide a continuous 750W output for desktop computer systems. It holds an 80 PLUS Bronze certification, which corresponds to an operational efficiency of up to 85% under typical workloads, helping to minimize excess heat generation and energy usage. The unit features a non-modular cable configuration, meaning all cables are permanently attached for a direct installation process. Adherence to the ATX12V 3.1 standard ensures compatibility with contemporary motherboards and components that require stable power delivery.
System cooling is handled by a single 135mm fan that operates with active temperature regulation, adjusting its speed according to thermal load. The unit's noise output is rated at 40.1 dB. For component safety, it integrates a comprehensive set of electrical protections, including over-voltage (OVP), over-current (OCP), over-power (OPP), and short-circuit (SCP) safeguards. The design also incorporates active Power Factor Correction (PFC) to maintain a stable and efficient power draw from the electrical outlet.
Key Features:- 750W continuous power output
- 80 PLUS Bronze certified efficiency
- Standard ATX component form factor
- Includes two 6+2 pin PCIe connectors
- Provides two SATA power connectors
- Equipped with one 4+4 pin CPU power connector
- Features a full suite of electrical protections
- Measures 150 x 86 x 150 mm
Estimated delivery: 10.02 - 16.02
Today: 11:00 - 15:00
Estimated delivery: 10.02 - 16.02
Today: Closed
Estimated delivery: 10.02 - 16.02
Today: Closed
Estimated delivery: 10.02 - 16.02
Today: Closed
Estimated delivery: 10.02 - 16.02
Today: 10:00 - 14:00
Estimated delivery time: 10.02 - 16.02
Estimated delivery time: 11.02 - 16.02
Estimated delivery time: 10.02 - 15.02
Estimated delivery time: 11.02 - 16.02
Estimated delivery time: 11.02 - 15.02
Estimated delivery time: 10.02 - 16.02
Estimated delivery time: 10.02 - 16.02
Estimated delivery time: 11.02 - 15.02
- manual pdf (English)


