Bi Directional Hub Specs

Port circuit: EIA-485 transceiver with 120 ohm fail safe termination between +Data and -Data (Slew-rate-limited drivers minimize EMI and reduce reflections caused by improperly terminated cables)
Input signal: 0.2 volts minimum, 12 volts maximum
Output signal: 1.5 volts (minimum) into 120 Ohm
Termination Connectors: Gold plated 5 pin XLR (typically one male, seven female), Terminal Blocks Optional
Port protection: ±60V continuous, ±15KV transient
Isolation: 600 volts
Power input: 100 to 240 VAC 50/60 Hz, ½ Amp
Color: Front, Back: Black Top, Bottom, Sides: Silver Hammertone
Size & weight: 6.5" deep, 1.7" high, 16.5" wide 4.5 pounds
(19" rack adapter available).