KMMX Micro USB 3.0 Kycon KMMX Series Micro USB 3.0 (also known as SuperSpeed USB) are more compact than the mini-USB. The stainless steel shell with nickel plating yields 10,000 insertion cycles, making it ideal for portable devices such as mobile phones, PDAs, and digital cameras. Kycon KMMX Series Micro USB 3.0 meets the USB-IF 3.0 specification and is available as SMT with through hole shield tabs or SMT. The contacts are 30µ' gold plated over nickel and gold flash plating on the solder tail.