Review on 🖨️ PCIe Combo Serial Parallel Expansion Card - Printer LPT Port RS232 Com Port Adapter - IEEE 1284 Controller Card with WCH382 Chip - for Desktop PC Windows 10 (Low Bracket Compatible) by Rafael Calderon

The product really works. But you have to make an effort. The drivers on the hard drive are old (2014). Get newer versions from the website. WINDOWS 10: I bought a model with a parallel port and a serial port. The drivers found on the website for this specific model are not digitally signed. I needed to install a parallel port/dual serial port driver. It is digitally signed and working. Ubuntu 20.04: Makefile for compiling drivers is for kernel versions equal to or lower than 4.x. They are not compiled as in the 5.x kernel; You must edit the makefile to make it work properly, either by removing the version check or by adding the 5.x version check in the same sections as the 4.x kernel check. They should put more effort into their drivers. as the hardware works fine once you get there.