The drivers below will install the Keyspan USA-19HS USB to Serial Adapter on a Windows compatible computer.
Keyspan USA-19HS Driver
File: usa-19hs-driver-v4-windows-2008-server-r2-7-8-8-1-and-10.zip
35dd4b15976eb14858f090305da313a492d076c8e2a5006fd4631ef407fe6a3a
Keyspan USA-19HS Driver
File: KeyspanUSA19hsWinV34.exe
9cae652a4fcbf70b2a901109355f847974e9692b54fd06d09237258a60863f33