Does using the usb port show how much current is drawn? can this port's current be limited for testing?

Current drawn on the built-in USB port is not indicated on the display. The display shows only voltage and current associated with the main power outlets when output is enabled. When output is not enabled, the display shows voltage and max current settings. A USB connector could be connected to the main power output connectors and any voltage and current through that connector would be shown on the display.

is this machine good for gold and silver plating?

I don't know what voltages are required for plating, but, it is a very good supply for the money.

Can this be used as a short circuit killer to repair phones and circuit boards?

Yes, as long as it doesn’t exceed the max output rating 5A. It will go into protection mode beyond that point. I use mine daily and for the money it is top notch.

ASIN	B09BFCF13Y
Best Sellers Rank	#291,507 in Electronics ( See Top 100 in Electronics ) #1,052 in Power Supplies (Computers & Accessories)
Box Contents	1 * Dc Power Supply 1* Power Cable 1 * Output Cable 1 * User Manual
Brand	NANKADF
Brand Name	NANKADF
Compatible Devices	Camera
Connector Type	usb
Connector Type Used on Cable	usb
Cooling Method	Water
Country of Origin	USA
Current Rating	10 Amps
Customer Reviews	4.6 out of 5 stars 963 Reviews
Form Factor	Compact
Item Dimensions	20 x 0.9 x 1.4 Centimeters
Item Weight	1.48 Kilograms
Manufacturer	NANKADF
Manufacturer Part Number	NPY2
Maximum Input Voltage	115 Volts
Minimum Input Voltage	115 Volts
Model Name	30V 10A BLACK
Model Number	30V 10A BLACK
Output Wattage	300
UPC	780279579925
Wattage	100 Watts

DC Power Supply Variable, Bench Power Supply with Encoder Adjustment Knob, Output Enable/Disable Button, Adjustable Power Supplies with USB Quick-Charge, Short Circuit Alam (30V 10A Black)

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