This USB 3.0 pin header can be plugged to a free USB 3.0 pin header male of your mainboard in order to expand your system internally by two USB 3.0-A ports. Thus you can use e.g. connect an USB mem...
This MiniPCIe adapter by Delock expands your system by four additional serial ports, which you can lead out through the slot bracket. You can connect different serial devices like printer, scanner,...
This PCI Express card by Delock expands the PC by two external USB-C™ ports. Different USB devices, such as docking stations, card readers, external enclosures etc., can be connected to the card.