Which end of cable is 5 volts input and which is 12 volts output?

5 volts is the USB-A input side. The output is on the barrel plug and is 12V.

I have a 5v/3a power bank that I'm planning to use to power up a 12v 1.5a monitor. Will this work?

The max output current for 12V is 1 amp. Your monitor requires 1.5 amps so technically the draw over the rating of the adapter and will not work.

Could this be used for audio equipment as a 12v trigger to activate (an amplifier) from another device that has USB but no trigger output?

Probably will work. I used a 5v usb connector in my car to feed this device. It gave me a 12 v output to supply a radar detector.

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USB 5V to DC 12V USB Voltage Step Up Converter Supports Voltage Display

USB 5V to DC 12V USB Voltage Step Up Converter Supports Voltage Display

Product ID: 571647749

Details

Color
Black
Compatible Devices
Only capable
Connector Type
USB Type C
Item dimensions L x W x H
1.65 x 0.86 x
Specific Uses For Product
Speaker

⚡Boosts 5V USB to 12V DC output

🔄Built-in switch & voltage display

🔋Max 1A current for stable power

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Sold byAmazon KUWAITDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔌 Power up smarter, not bulkier — your sleek 12V solution awaits!

COMPACT POWER BOOST - Transforms any USB 5V source into a reliable 12V output, perfect for powering low-wattage devices with ease.
SAFETY FIRST DESIGN - Advanced IC circuit protection guards against over-current, over-voltage, short circuits, and overheating for peace of mind.
SMART VOLTAGE DISPLAY - Integrated voltage readout and on/off switch reduce wear and give you real-time control over your power flow.
UNIVERSAL COMPATIBILITY - Supports multiple DC jack sizes (5.5x2.5mm & 3.5x1.35mm) and USB-C input, making it the go-to adapter for diverse 12V gadgets.
DURABLE FLEXIBLE BUILD - Premium pure copper core and PVC sheath ensure fast conduction and withstand over 10,000 bends—built to last in any setup.

The FARSENSE USB DC 5V to 12V Step Up Power Cable is a compact, efficient boost converter cable that elevates standard 5V USB power to a stable 12V output at up to 1A. Featuring a built-in switch and voltage display, it offers real-time control and reduces wear on connectors. Designed with pure copper core wiring and a flexible PVC sheath, it ensures durability and reliable conduction. Compatible with multiple DC jack sizes and USB-C input, it safely powers low-wattage 12V devices with advanced circuit protections against electrical faults.

Specifications

ASIN	B0CDTCXF8P
Best Sellers Rank	#72,453 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #269 in Power Converters
Brand	FARSENSE
Color	Black
Compatible Devices	Only capable of supplying power to 12V devices with power below 10W
Connector Type	USB Type C, 3.5mm Audio Jack
Current Rating	1 Amps
Customer Reviews	4.3 4.3 out of 5 stars (168)
Finish	Matte
Input Voltage	5 Volts
Item Dimensions	1.65 x 0.86 x 0.43 inches
Item Weight	39 Grams
Manufacturer	FARSENSE
Mfr Part Number	UC12
Model Number	UC12-D
Nominal Power	10 Watts
Number of Items	1
Number of Ports	1
Package Quantity	1
Power Plug Type	CEE 7/16 Europlug
Smart Home Compatibility	Not Smart Home Compatible
Specific Uses For Product	Speaker
UPC	797430388739
Unit Count	1 Count
Warranty Description	1
Warranty Type	Limited

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