National Instrument NI9403, 32-Channel C Series Digital I/O ModelCondition:* Used, Removed From Service In Working Condition. Unable to test. As pictured.Additional Notes:* Number of Bidirectional Channels: 32* Current Flow Direction: Sinking input, Sinking Output, Sourcing Input, Sourcing Output* Enclosed: Yes* Digital I/O Logic Levels: 5 Volt TTL* Digital I/O Isolation: 60 Volt DC Ch-Earth Ground Isolation* Front Connection Type: D-SUB* Number of Digital Input Only Channels: 0* Number of Digital Output Only Channels: 0* Maximum Update Rate: 7 s* Supported Hardware Platform: C SeriesNational Instrument NI9403