Home / Shop / Browse By Category / Telephone Systems / KSUs / ESF-XE-10 Expansion KSU for Professional Level IIA ESF-XE-10 Expansion KSU for Professional Level IIA$0.00 ESF-XE-10 Expansion KSU for Professional Level IIA quantity Add to cart SKU: 720105 Categories: All NEC Products, Browse By Category, Browse By Manufacturer, Electra Pro II, KSUs, NEC, Telephone Systems Tags: expansion KSU, Key Service Unit, KSU Description Description ESF-XE-10 Expansion KSU for Professional Level IIA Related products Browse By Manufacturer , NEC NEC Aspire S 8 Port Digital Station Card 0891051 Browse By Manufacturer , NEC NEC Aspire 0890045 34 Button Display Speakerphone Black Browse By Manufacturer , NEC NEC Aspire 4COIU-LS1 4 CO LS Trunk Card Browse By Manufacturer , NEC NEC Aspire 8KSU-A1 8 Slot Cabinet with Power Supply