Hi, Jeff. Thank you for your review and my apologies for the issues experienced with this USB to PS2 converter. Just to verify, were all three keyboards Logitech brand? If they were, please reach out to us directly at email@example.com with your order information as you may have received a defective converter. Sorry again for the trouble and thank you for your feedback!
August 6, 2017
USB Male to PS2 (MDIN6F) Converter for Logitech Brand
Great item for less, easy to locate on the website and will Keep on ordering parts from Monoprice. Thanks
PROS: The perfect adaptor for Logitech brand Combo Mouse and Keyboard sets