The PEX2S952LP low profile/half-height PCI Express Serial Card turns a PCI Express slot into two RS232 (DB9) serial connections. The card is constructed using a native single chip design that lets you harness the full capability offered by PCI Express (PCIe), while reducing the load applied to the CPU by as much as 48% over conventional bridge chip serial cards. The PCI Express RS232 Serial Adapter Card is compatible with a broad range of operating systems including Windows® 7/ Server 2008 R2 / Vista/ XP/ 2000, Linux Kernel 2.6.11 and up. The card comes pre-configured with a low profile bracket, but also includes an optional full profile bracket that lets you add two serial ports to virtually any computer (regardless of the case form factor). Backed by a StarTech.com Lifetime warranty and free lifetime technical support. Features: Bus Type: PCI Express Card Type: Low Profile (SP bracket incl.) Chipset ID: PLX/Oxford - OXPCIe952 Interface: Serial Ports: 2 Max Baud Rate: 460.8 Kbps Serial Protocol: RS-232 Connector Type(s): 1x PCI Express x1 Male External Ports: 2x DB-9 (9 pin, D-Sub) Male Internal Ports: 1x LP4 (4 pin, Molex Large Drive Power) Male OS Compatibility: Windows® CE 6.0 / 5.0, 95, 98SE, 2000, XP, XP Embedded, Vista, 7, 8, 8.1, 10 Windows Server® 2003, 2008 R2, 2012, 2012 R2, 2016 Linux 2.4.x to 4.4.x LTS Versions only What's in the Box: 1x Low Profile Serial Card 1x Ribbon Cable w/ DB9 port 1x Full Profile Bracket 1x Low Profile Bracket 1x Driver CD 1x Instruction Manual