The 2 HDMI & VGA video ports can be used at the same time, but for Windows laptop it's depends on the graphics card and setting of source laptop. The Intel graphics chip is only capable of at most 3 displays at once, which includes the laptop display.
When Dual HDMI and VGA work simultaneously, the resolution will down to 1080P/60Hz, the actual resolution of monitors depends on the laptop's bandwidth and the resolution of connected monitors.
Please plug in the Laptop's power adapter to the USB-C Power Delivery port before connecting an external hard drive or multiple display purpose.
Compatible devices:
12 "MacBook 2015/2016/2017, 13"/15 "MacBook Pro 2017 2019 2020 2021 OR Newer version 13" MacBook Air 2018 2019 or new version Mac Mini 2018/2019 or new version imac 2019 or Newer version, 13 '' asus Zenbook UX330UA, keyboards, monitors, laptops, Card Readers, Microsoft Surface Book 2/Surface Laptop 3, HP Specter X360/HP Elite × 2 1012/HP ELITEBOOK FOLIO G1/ HP ZBook 15 G3/HP Laptop 13-Af001tu/HP ProBook 450 G5/6/7/Dell XPS13/15, Lenovo Yoga, Dell XPS12 (9250)/Dell XPS13 (9350)/Dell XPS15 (9550), Dell Latitude 13 7000 / Latitude 13 E7370L, Enovo: Lenovo Yoga 720-13ikb/ Yoga 900-13isk/ Yoga 910/ Yoga 920/ Yoga 930