Due to the changes made in the design of Windows 10 and 8.1, ports are being turned off to conserve battery life. PIN pad does not continuously connect to Point of Sale at all times. The new Power Management feature in Windows turns off the port as soon as nothing is happening (ex. a payment is being processed using the PIN pad). This causes the PIN pad to continuously connect and disconnect, beeping each time.
Resolve the issue by Updating Point of Sale to the latest release.