There is a 12V electrical appliances. How can I receive the computer power supply
USB cable more than 2 meters, it is not easy to use! It is best not to change! If the card signal is not very good ~ can try to make their own an amplifier! Go looking online!
Borrow the wire cable network experts to answer. "Wire and cable type test report of the effective time is not uniform, different industries have different requirements.Generally, such as fire-retardant fire type test report is generally two years, coal safety signs mine cable is two years; some for three years, As well as for the report of the representative, can refer to the production license implementation details. The above description. "In addition you can also enter the" National Wire and Cable Quality Supervision and Inspection Center "website.
224 connection is valid. Brown yellow 2 pairs of 4 negative, the remaining 2 docking data lines. Usb positive external power supply 5-6 volts. 15-20 meters no problem.
