1 x CompactFlash™ Type II Socket Supports IBM Microdrive 1 x 44-pins & 1 x 40-pins IDE interface by pin-header 1 x RS-232 1 x RS-232/422/485 Interrupt Selectable (IRQ 3/10 for COM1; IRQ 4/11 for COM2; IRQ 5/7 for LPT) I/O address Selectable (3E8H/3F8H for COM1; 2E8H/2F8H for COM2; 278H/378H for LPT) LPT port support SPP & EPP Mode Master/Slave jumper for IDE port Power Requirement: +5V DC