VANTEC 2-Port Serial (RS-232) PCI Host Card Model UGT-PC20SR Type: PCI to Serial Port Card External Ports: 2 Serial Ports (DB9 Male) Operating Systems Supported: Windows XP/Vista/7/8 (32/64 bit) Dimensions: 122 x 56 x 22mm Package Contents: 1 x 2-Port Serial (RS-232) PCI Host Card 1 x Driver CD 1 x User Manual 1 x Low Profile Brackets