The WCH CH382L is a PCI-Express (PCIe) bridge chip from Nanjing Qinheng Microelectronics (WCH). It is a low-cost solution for adding legacy parallel (LPT) and serial (COM) ports to computers that lack them. Many PCIe expansion cards sold online under various brand names use this chipset, often as a "PCIe to 2x RS232" serial card or a "PCIe Serial + Parallel" combo card.
The is a high-speed PCIe (PCI Express) to parallel port bridge chip manufactured by Nanjing Qinheng Microelectronics (WCH). It is commonly found on add-on cards that provide a legacy LPT (Printer Port) interface for modern motherboards that lack this port.