Q1: What are the compatible devices of the cable?

Samsung Galaxy Note 9/8, Samsung Galaxy S10+/S10/S9+/S9/S8+/S8 LG V30/V20/G7/G6/G5, Sony XZ, HTC 10 Compatible Devices (Limited Charging Speeds): Samsung Galaxy Note 10, iPad Pro 12.9″ (5th generation), iPad Pro 12.9″ (4th generation), iPad Pro 12.9″ (3rd generation), iPad Pro 12.9″ (2nd generation) Nexus 5X/6P, Google Pixel/Pixel XL/3XL

Q2: Can I use it with USB-A wall chargers?

Yes, this is a USB-A to USB-C cable. 

Q3: What devices will limit the charging speed?

Samsung Galaxy Note 10

iPad Pro 12.9″ (5th generation), iPad Pro 12.9″ (4th generation), iPad Pro 12.9″ (3rd generation), iPad Pro 12.9″ (2nd generation)

Nexus 5X/6P, Google Pixel/Pixel XL/3XL

Please contact us for assistance if you have any further questions.