![charging with ac over usb 2 vs usb 3 charging with ac over usb 2 vs usb 3](https://www.secomp-international.com/dynimg/catalog/QAcCUi86XUjExSbzTfE-QfJQtSI%3D/trim/fit-in/1800x1800/filters:no_upscale():cachevalid(1552056696.0)/images/best/bilder/s19/19111033_2019_m_0_hi.jpg)
However devices with USB 3.0 Micro B receptacle can accept mating with previous USB 2.0 Micro B male plug. USB 3.0 Micro B connectors are found on hard drives, digital cameras, cell phones, and other USB 3.0 devices.Ī USB 3.0 Micro B male connector cannot be plugged in to a USB 2.0 B socket due to its plug shape change.
Charging with ac over usb 2 vs usb 3 full#
![charging with ac over usb 2 vs usb 3 charging with ac over usb 2 vs usb 3](https://ae01.alicdn.com/kf/HTB1AU8oFGSWBuNjSsrbq6y0mVXaw/Dual-USB-2000W-Watt-DC-12V-to-AC-230V-Portable-Car-Power-Inverter-Charger-Converter-Adapter.jpg)
(Arcing while plugging them in is not a problem, since high voltages aren't initiated until after the cable is connected.) This isn't a new problem-arcing can become a problem at only 12 V-but the scope for potential damage increases with the new higher voltage possible. Probably the largest amount of added material in the new specification regards the math and engineering considerations for predicting, detecting, and mitigating arcing when unplugging USB-PD cables. Under the hood, the standards on the midplate have gotten stricter-a new paragraph has been added mandating that pins A4-A9 and B4-B9 (power, power delivery, and legacy USB 2.0 support) must not short to ground during connector mating. Comparing the USB-C 2.0 standard to today's 2.1 standard, the optional new Extended Power Range (EPR) specification-which bumps maximum voltage up to 48 V, sufficient to deliver 240 W at 5 A-seems to be by far the largest change.įrom a consumer's perspective, the physical standard hasn't changed-USB-C type 2.1 devices will plug into USB-C type 2.0 ports, and vice versa. Although Leung points out that the new specification has been under development for two years, very little has changed.