Potentially having power issues with the USB C ports on my 15" 2017 MacBook Pro. Refer to detailed hardware setup and troubleshooting in below paragraphs. If there is any additional info needed, please let me know. Setup: Refurbished 2017 15" MacBook Pro 14,3 macOS 10.13.4 Apple USB C charger into hub's pass-through charging Logitech M325 wireless bluetooth mouse (has USB A dongle) QacQoc USB C ethernet converter with USB 3.0 ports https://www.amazon.com/QacQoc-Aluminum-Portable-Ethernet-Converter/dp/B075H5RBKN /ref=sr_1_1_sspa?s=electronics&ie=UTF8&q… VicTsing Gold-Plated HDMI to VGA Converter Adapter to Dell 1800 FP second monitor SD, microSD cards into hub Transcend USB 3.0 CF/SD card reader Occasionally a hard drive into hub or into Aukey adapter Aukey USB C to USB 3.0 adapters Tested with two Satechi Aluminum Type-C Pro Hub Adapters (one at a time) Amazon.com: Satechi Aluminum Type-C Pro Hub Adapter - Thunderbolt 3 (40Gbs), 4K HDMI, Pass-Through Charging, SD/Micro Ca… Also tested on HyperDrive USB C Ultimate 11-in-1 Hub https://www.amazon.com/HyperDrive-Adapter-Ultimate-Delivery-Charging/dp/B076524X FW/ref=sr_1_2?s=electronics&ie=UTF8&qid=… Troubleshooting: For both USB C hubs, if more than a few peripherals are plugged in, my Logitech mouse either stops working completely or lags to the point that it is unusable. To make sure that it wasn't just the hub, I tried three hubs: one HyperDrive and two of the same Satechi - one of which was sent from the manufacturer to make sure the first hub from Amazon wasn't defective. All hubs presented the same problems with the mouse. The manufacturer of the mouse said to only plug directly into the computer but since that is impossible, I did the next closest thing: bought Aukey USB C to USB 3.0 adapters and used those on the opposite side of the laptop that the hub was plugged into. That worked perfectly... with only one USB C port in use on that side. Unfortunately when I plugged in my external hard drive via another Aukey USB C to USB 3.0 adapter on the same side, the mouse started lagging again. This to me (and Apple support via phone) seems like a power issue and is concerning especially since this laptop is brand new, the mouse works on my other laptops (two machines with USB A ports) and if there is a power issue I do not want to lose or corrupt data on my other peripherals. Did an SMC reset, issues still persist. Any suggestions as to how to fix this? Is it a limitation of the laptop/peripherals or did I just get a bad laptop? Any info is appreciated. Thanks.