... /XP, XP Embedded, Linux 2,500VDC EFT Surge Protection 2,500VDC Isolation protection for RS-422/485 (PCI-1602UP) Interrupt status ... system performance, all cards allow transmission rates up to 921.6 kbps. To increase reliability, the cards offer EFT surge protection ... , protecting your system from abrupt high voltages up to 2,500 VDC ...