external usb hub

I have a Delock USB Type-C Hub [ DeLock USB 3.1 Hub 3 Type-C ] that supports up to three USB-A Ports and a SDcard [ it also has a 5V power-in barrel connector ]. When I use it on it's own with it's own attached 10cm cable it works like a charm. When I plug-in the USB-C extended cable 1m ( male...

My laptop's motherboard only has 1 USB 3.0 port. I want to add at least one more USB 3.0 port. Can I do this via a USB splitter or some external USB hub? Will the USB speed for each port be the same as it was with 1 port? For example, if 1 port was at 5 Gbit/s and I add a external USB hub and...