Official support for this device largely ended before the release of Windows 10, but the following sources provide working drivers: Drivers & Downloads | PA088UZ | Targus USA
OldVersion.com or MajorGeeks.com also host this file, but always verify the checksum against DisplayLink’s official hash.
Targus does not actually manufacture the chip inside this dock. DisplayLink does. Therefore, there is no “Targus PA088E driver” specifically. You need the generic DisplayLink driver that supports the DL-165 chipset.