Product Description
This 4Pin Molex power connector Y splitter cable is designed to convert a single peripheral power output into two female connectors, allowing multiple electronic devices to share one PSU rail. Using 18AWG oxygen-free copper wires and robust crimp terminals, the harness provides stable 5 V and 12 V power transmission to storage drives, case fans, LED lighting, and other peripheral loads.
Color-coded wires (yellow, red, black) simplify installation and reduce wiring errors. The compact 4Pin housings with latch design ensure a secure mating interface even under vibration in desktop, small server, or industrial chassis. This Y cable is also suitable for DIY projects where legacy Molex interfaces are used to feed low-voltage electrical and light signal loads on PCBs or controllers. Customization of length, wire gauge, connector type, and pin assignment can be provided for OEM harness projects.
| Product Type | Power cable connector Y splitter |
| Connector A | 4Pin Molex male power connector |
| Connector B | 2 × 4Pin Molex female power connectors |
| Pin Count | 4 pins per connector |
| Pin Pitch | 4.20 mm power terminal pitch (Molex type) |
| Wire Type | 18AWG stranded copper wire |
| Conductor Material | Oxygen-free copper for low-loss power transmission |
| Wire Colors | Yellow (12 V), red (5 V), black (GND) |
| Insulation | PVC electronic wire, rated 300 V |
| Housing Material | Flame-retardant PA or PBT, high temperature resistant |
| Terminal Type | Tin-plated crimp power terminals |
| Rated Voltage | 5 V / 12 V DC |
| Rated Current | Up to 5–7 A per circuit (depending on ambient temperature) |
| Cable Length | Standard 20–30 cm, customizable on request |
| Operating Temperature | -20 °C to +80 °C |
| Flammability | UL94V-0 compatible materials |
| Compliance | RoHS / REACH |
| Application | HDD / SSD, case fan, water pump, LED strip, low-power PCB and electronic modules |
Applications
Splitting one Molex peripheral output to power two HDD/SSD or optical drives
Providing additional connectors for case fans, pumps, and LED light strips in PCs and workstations
Low-voltage power distribution in small servers and network equipment using Molex-type connectors
Bench power supply leads for testing PCB prototypes and other electronic modules
DIY and hobby projects requiring convenient 5 V / 12 V wire cable power taps
Precautions
Confirm the polarity of each connector before use; yellow is typically 12 V, red 5 V, and black ground. Incorrect wiring may damage connected devices.
Do not exceed the total current capability of the original PSU Molex output when powering multiple loads.
Route the harness away from sharp edges, moving fan blades, and high-temperature components to protect insulation and terminals.
When used in enclosed cases, ensure adequate airflow so that bundles of power wires do not overheat.
Custom versions with different wire lengths, pitches, additional branches, or other mating connectors can be supplied for project and batch orders.
