APC Smart Slot UPS Interface Expander EN, RS-232, RS-232, 0.475 x 0.425 x 0.15" (12.1 x 10.8 x 3.81 mm)
APC Smart Slot UPS Interface Expander EN. Interface: RS-232, Output connections: RS-232, Dimensions (WxDxH): 0.475 x 0.425 x 0.15" (12.1 x 10.8 x 3.81 mm)