Question: Hi is it possible to remove the USB and solder wires to the +5v and GND terminals by hand?
Answer: Yes, the USB plug can be removed. you can unlock the latch /little black holder. It can be soldered. please be very swift and control the temperature around 200 degrees (lower temperature ) while soldering
Question: Please can you confirm the length I ordered one and it was only 50mm (5cm) long, not 50cm as per the title.
Answer: Hello It should be 50cm. please contact the seller and send them the photo for exchange (there is contact on the warranty card)