Add 2 RS-232 serial ports to your standard or small form factor computer through a PCI Express expansion slot - pci express serial card - pci-e serial card - pci express RS232 - rs232 card - dual port serial card General Information Manufacturer: StarTech.com Manufacturer Part Number: PEX2S553 Brand Name: StarTech.com Product Model: PEX2S553 Product Name: 2 Port PCIe Serial Adapter Card with 16550 Marketing Information: The PEX2S553 PCI Express serial card lets you turn a PCI Express slot into 2 RS232 (DB9) serial ports. Based on a native single chip design (no bridge chip), this 2-port serial adapter card allows you to harness the full capability offered by PCI Express (PCIe), and reducing the load applied to the CPU by as much as 48% over conventional serial cards. The RS232 Serial Adapter Card (PEX2S553) is compatible with a broad range of operating systems including Windows and Linux Kernel 2.6.11 to 4.11.x, and MAC OS 10.4 and above. Plus, the serial card includes an optional half-height/low profile bracket that allows the card to be installed in any PCI Express slot, regardless of the size of the computer case. This product is a replacement for our PEX2S552 card. Backed by a StarTech.com 2-year warranty and free lifetime technical support. >More from the Manufacturer Product Type: Serial Adapter Technical Information Host Interface: PCI Express x1 Data Transfer Rate: 460.8kB/s UART Type: 16550 Platform Supported: Linux Platform Supported: Mac Platform Supported: PC Interfaces/Ports Number of Serial Ports (External): 2 Physical Characteristics Form Factor: Plug-in Card Card Height: Half-height/Low-profile Height: 0.8" Width: 4.7" Length: 4.1" Weight (Approximate): 2.20 oz Miscellaneous Package Contents: 2 Port PCIe Serial Adapter Card with 16550 Low Profile Brackets Driver CD Instruction Manual Additional Information: Native single-chip, single lane PCI Express chipset delivers true PCIe performance. Standard and low profile/half-height bracket included to ensure fitment in any system. Easy to install and use with full step-by-step instructions saving time and hassle. OS Compatibility: Windows DOS, 95, 98SE, 2000, CE 5.0/6.0, Embedded System 2009, POS Ready 2009, XP Embedded, XP, Vista, 7, 8, 8.1, 10 Windows Server 2003, 2008 R2, 2012, 2012 R2, 2016, 2019 Mac OS X 10.4 to 10.10 Linux kernel 2.6.x to 4.11.x LTS Versions only Environmentally Friendly: Yes Environmental Certification: RoHS Country of Origin: Taiwan Warranty Limited Warranty: 2 Year

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