We use the Tripp-Lite version(model U280-W04-100C2G) at work. When I found this identical charger under Amazon Basics, I compared specs and found it is the same unit at a better price (the Tripp-Lite was usually found at over $100.) The Tripp-Lite handles all my charging at work, which gave me the confidence to try this one. At home, the Amazon Basics 100W four port charger is used to charge all our devices including our MacBooks, an iPad Pro, iPhones, portable power banks and other devices - sometimes all four ports are in use. It has made all my older chargers obsolete. USB PD (Power Delivery) is a game changer; be sure to read up about it (see below.) This charger follows the USB PD Rev. 2.0 source profiles for USB-C. It does not do PPS (Programmable Power Supply) charging under USB PD Rev. 3 and up; it is a new protocol that not many devices use, at least not yet. Both chargers display several agency markings including FCC and UL. The UL certification for this charger is listed under E472287 for model B087MDYP24 as found online. Beware of using electrical appliances that are not UL listed, there's a lot of them out there. Keep in mind that claiming 'conforms to UL standards' doesn't count; that means it hasn't passed UL safety standards. So far, this one is a winner. No problems after several months of use, UL listed, compact size, powerful, multiple ports and a decent price. I recommend getting the 100W four port version because it works for many charging needs. I'll add updates with use. Some tips: • I've never had a problem with this coming loose from an electrical outlet. If this doesn't stay plugged in to your outlet, the problem might be with the outlet. Loose electrical outlets are a fire hazard! • USB-C Power Delivery is variable: - The device being charged negotiates what voltage and current the charger is to deliver. If the device is not capable of this negotiation, the charger will default to the older USB-A power standard. - Not all devices will be able to use the full 100W capacity of this charger. Our MacBooks can; our iPhones, iPads, and others like our portable power banks can not. - The power delivered depends on the connecting cable. Low quality cables can charge but not at the higher power this charger is capable of. For best results use a good quality cable. - The more a battery charges up, the less power it will draw. If you want to see a charger's best performance, start with a battery with a low state of charge. - Some devices such as my Apple Watch draw less power during charging when the display is active. Once the display turns off, the charge rate increases. Go figure. Updates March 9, 2023: 9 months along and no problems to report with this wall charger. It charges all our devices even with all four ports in use. We're now using it with a MacBook Air M1 & iPad Pro - both get charged quickly with no overheating. This still gets a strong recommendation. June 25, 2023: One year of use and this is my go-to charger. I still rate it five stars and I don't give out five stars easily. September 11, 2024: Two years along and this is still my go-to charger. It works great with our new MacBook Air M3 with the MagSafe 3 charging cable, charging at 100W as reported under System Information. It's an even better deal now that Amazon has reduced the price. Still recommended. :) June 25, 2025: Three years of steady use with no problems to report. One aspect I haven't tested is the input voltage as I've only ever used 120VAC - the charger label states 100-240VAC. This should be capable of use traveling abroad with only a simple adapter. I hope you find this helpful.