Keyspan
Keyspan USB Serial Adapter
FreeKeyspan USB Serial Adapter: Fast and Easy Connectivity
Windows
Keyspan Digital Media Remote
Trial versionKeyspan Digital Media Remote Software for Media Control
WindowsKeyspan USB PDA Adapter
Trial versionKeyspan USB PDA Adapter Software: Reliable Connectivity
Windows
Keyspan SX Serial Card Updater
FreeUpdate Your Keyspan SX Serial Card Efficiently
MacKeyspan USB Twin Serial Adapter
FreeEfficient USB Serial Communication for Mac
Mac
Keyspan USB adapters
FreeKeyspan USB Adapters: Essential Utility for Mac Users
Mac