Reverse Polarity Power Adaptor: Most adapters only have single polarity, positive (+) or negative (-) polarity. This SoulBay AC Adapter owns Dual Polarity, reversible and changeable. 30Watt depends on the max output on 12V 2A and USB Port, 12V 2A + 5V 1.2A = 30W.
eBay
LM2596 Multi Channel Switching Power Supply 3.3V/5V/12V/ADJ Adjustable Voltage Output Power Supply Module
Aliexpress UK
IRREVERSIBLE POLARITY: All the DC Plug for this DC adapter is Center Positive: inner positive(+), outer negative(-). The DC power adapter is not compatible all devices. Cord Output: 12V 3A. USB Output: DC 5V/2.1A.
eBay
5Pcs/10Pcs Newest Multi-function Mini Boost Module Step Up Board 5V/8V/9V/12V 1.5A LED Indicator Diy Electronic Voltage Module
Aliexpress UK
1 x Adjustable Power Adapter. 1 x Polarity Converter. Output Current: 2A. Output: DC 3-24V. DC Plug: approx. Power: 48W. Easy to use. Long service life.
eBay
FTBTOC XL830L Digital Multimeter Portable multi meter AC/DC voltage meter DC Ammeter resistance tester Blue Backlight
Aliexpress UK
IRREVERSIBLE POLARITY: All the DC Plug for this DC adapter is Center Positive: inner positive(+), outer negative(-). The DC power adapter is not compatible all devices. Cord Output: 12V 3A. USB Output: DC 5V/2.1A.
eBay
WitMotion USB-UART 6-In-1 Converter, Multifunctional USB-TTL/RS485/232, TTL-RS232/485,232-485)Serial Adapter, CH340/ CP2102 Chip
Aliexpress UK
Features include IC regulated DC output, short circuit protection and automatic overload cut off. The 8 detachable plugs are: 2.5, 3.5, 5x2.1, 5.5x2.5, 3.5x1.35, 4x1.7, 5.5x1.5, 2.35x0.75, Female USB Socket and Micro USB plug.
eBay
NANO V3.0 Controller Terminal Adapter Expansion Board Prototype Shield And UNO Multi-purpose Expansion Board For Arduino
Aliexpress UK
The total output current up to 8A. Output Port: 8 USB output ports. USB Output Current: 1A-2.4A.
eBay
New 10pcs/Set 5.5x2.1mm Multi-type Male Jack for DC Plugs for AC Power Adapter Computer Cables Connectors for Notebook Laptop
Aliexpress UK
Reverse Polarity Power Adaptor: Most adapters only have single polarity, positive (+) or negative (-) polarity. This SoulBay AC Adapter owns Dual Polarity, reversible and changeable. 30Watt depends on the max output on 12V 2A and USB Port, 12V 2A + 5V 1.2A = 30W.
eBay
EU Plug 180 Degree Rotatable Socket Converter 3 in 1 US Extension Plug Multi-Plug Mini Slim Wireless Outlet Adapter Sockets
Aliexpress UK
Reverse Polarity Power Adaptor: Most adapters only have single polarity, positive (+) or negative (-) polarity. This SoulBay AC Adapter owns Dual Polarity, reversible and changeable. 30Watt depends on the max output on 12V 2A and USB Port, 12V 2A + 5V 1.2A = 30W.
eBay
3-Way Airbrush Air Hose Adapters Splitter Manifold Airbrush Accessories Multi Use Airbrush Fittings 1/8" with Adjust Knob Valve
Aliexpress UK