This is a combo (2) DB-9 (RS-232) and (1) DB-25 Parallel Printer (LPT1) Ports PCI Controller Card, Support Low Profile Bracket
Extend (2) DB9 Serial Ports and (1) DB25 Parallel Port in a computer with a PCI slot
Plug and play automatically assign IRQ and I/O address while supporting PCI/Q sharing
Power control communication, telecom and network equiment, POS system and office automation
Comptabile with PCI 2.2, plug and play, parallel transmision rate can reach 1.5 MB/s, RS-232 port's highest rate can reach 921.6 Kbps, each port provides 128 bytes FIFO buffer