Popular Questions

(USB4300N / USB4300NS) Does the USB4300NS & USB4300N supports Windows 10?
(UPD2018) FAQ for UPD2018 (USB 3.1 10G DisplayPort Alt-mode PCI Express Gen2 card w/dual USB-C ports)
(KEY-256UN1) How do I install iSafe Key?
(PAR5008x series) How to set 278/378 IO address for my Parallel Card in Windows 2000, XP, VISTA or 7?
How to modify the port number of Sunix IO card?
Can Sunix SATA PCI host card update the BIOS? Why? How?
Does Sunix Parallel Card support EPP/ECP mode ?
How to set the SATA cards in the bios?
After installation, why do some COM ports show installation unfinished (at the end of the COM port name has a question mark) ?
Why does a warning occur when I install the drivers for the RS-232 card?
Using Sunix USB peripheral product on Windows 2000 or XP O.S. System, do you need to install the driver?
If the COM port installed USB says Unknown USB Device (Device Descriptor Request Failed) Code 43.
I did follow the instructions also used Another USB port as well, but the status remains same.
I tried this device with Windnows 7 and Ubuntu, and everything works perfectly. When I try it on Windows 8.1 Laptops and PC's,the item does not work. Are the drivers incompatible?
Why isn't the PUB1200X+L/PUB0300XL working on my system?