UNIDENTIFIED AB-757 Data bus: 16-bit, ISA Size: Half-length, full-height card Hard drive supported: Two IDE (AT) Interface drives Floppy drives supported: Two 360KB, 720KB, 1.2MB, or 1.44MB drives [Image] CONNECTIONS Function Location 40-pin IDE(AT) Interface connector JP1 2-pin connector - Drive active LED JP2 34-pin control cable connector - floppy drive JP9 15-pin game port - internal JP10 10-pin serial port (COM2/3/4) - internal JP11 10-pin serial port (COM1/3/4) - external JP12 25-pin parallel port (LPT1/2/3) - external JP13 USER CONFIGURABLE SETTINGS Function Location Setting » Hard drive enabled JP7/jumper 4 pins 2 & 3 closed Hard drive disabled JP7/jumper 4 pins 1 & 2 closed » Floppy drive enabled JP7/jumper 5 pins 2 & 3 closed Floppy drive disabled JP7/jumper 5 pins 1 & 2 closed » IBM BIOS enabled JP5 pins 2 & 3 closed Other BIOS type enabled JP5 pins 1 & 2 closed USER CONFIGURABLE SETTINGS Function Location Setting » Parallel Port is JP4 closed uni-directional Parallel Port is bi-directional JP4 open » Floppy drive port address is JP7/jumper 3 pins 1 & 2 3F0-3F7h closed Floppy drive port address is JP7/jumper 3 pins 2 & 3 370-377h closed » Hard drive port address is JP7/jumper 1 pins 1 & 2 1F0-1F7,3F6 & 3F7h closed Hard drive port address is JP7/jumper 1 pins 2 & 3 170-177, 376 & 377h closed » Floppy drive booting sequence JP7/jumper 2 pins 2 & 3 is A:/B: closed Floppy drive booting sequence JP7/jumper 2 pins 1 & 2 is B:/A: closed » AT-compatible mode enabled JP7/jumper 6 pins 2 & 3 closed XT-compatible mode enabled JP7/jumper 6 pins 1 & 2 closed SERIAL PORT CONFIGURATION Port 1 (JP12) JP6/jumper 1 JP6/jumper 2 » COM1 Pins 2 & 3 closed Pins 1 & 2 closed COM3 Pins 1 & 2 closed Pins 2 & 3 closed COM4 Pins 2 & 3 closed Pins 2 & 3 closed Disabled Pins 1 & 2 closed Pins 1 & 2 closed SERIAL PORT INTERRUPT SELECT Port 1 (JP12) JP8/jumper 1 JP8/jumper 2 JP8/jumper 3 » IRQ4 Closed Open Open IRQ3 Open Closed Open IRQ5 Open Open Closed SERIAL PORT CONFIGURATION Port 2 (JP11) JP6/jumper 3 JP6/jumper 4 » COM2 Pins 2 & 3 closed Pins 1 & 2 closed COM3 Pins 1 & 2 closed Pins 2 & 3 closed COM4 Pins 2 & 3 closed Pins 2 & 3 closed Disabled Pins 1 & 2 closed Pins 1 & 2 closed SERIAL PORT INTERRUPT SELECT Port 2 (JP11) JP8/jumper 4 JP8/jumper 5 JP8/jumper 6 » IRQ3 Closed Open Open IRQ4 Open Closed Open IRQ5 Open Open Closed PARALLEL PORT CONFIGURATION LPT JP6/jumper 5 JP6/jumper 6 » LPT1 Pins 1 & 2 closed Pins 2 & 3 closed LPT2 Pins 2 & 3 closed Pins 1 & 2 closed LPT3 Pins 2 & 3 closed Pins 2 & 3 closed Disabled Pins 1 & 2 closed Pins 1 & 2 closed PARALLEL PORT INTERRUPT SELECT IRQ JP8/jumper 7 JP8/jumper 8 » IRQ7 Closed Open IRQ5 Open Closed