{"id":45515,"date":"2026-09-08T06:22:10","date_gmt":"2026-09-08T06:22:10","guid":{"rendered":"https:\/\/geektechsol.com\/index.php\/product\/mpex4s552-startech-com-4-port-rs232-mini-pci-express-serial-card\/"},"modified":"2026-09-08T06:22:25","modified_gmt":"2026-09-08T06:22:25","slug":"mpex4s552-startech-com-4-port-rs232-mini-pci-express-serial-card","status":"publish","type":"product","link":"http:\/\/geektechsol.com\/index.php\/product\/mpex4s552-startech-com-4-port-rs232-mini-pci-express-serial-card\/","title":{"rendered":"MPEX4S552 StarTech.com 4 Port RS232 Mini PCI Express Serial Card"},"content":{"rendered":"<p>MPEX4S552 Technical Specifications<\/p>\n<p>StarTech.com 4 Port RS232 Mini PCI Express Serial Card with 16650 UART<\/p>\n<p>Manufacturer Part Number: MPEX4S552<\/p>\n<p>Product Type: Multiport Serial Adapter<\/p>\n<p>Card Length: Full-length<\/p>\n<p>TAA Compliant: Yes<\/p>\n<p>Form Factor: Plug-in Card<\/p>\n<p>Host Interface: Mini PCI Express<\/p>\n<p>Environmentally Friendly: Yes<\/p>\n<p>Maximum Data Transfer Rate: 7.20 Mbit\/s<\/p>\n<p>Height: 1.2\u2033<\/p>\n<p>Width: 0.4\u2033<\/p>\n<p>Ports Expandability: 4 x DB-9 RS-232 \u2013 Serial<\/p>\n<p>Product Color: Green<\/p>\n<p>Platform Supported: PC, Mac, Linux<\/p>\n","protected":false},"excerpt":{"rendered":"<p>MPEX4S552 Overview<\/p>\n<p>The MPEX4S952 4-Port RS232 Mini PCI Express Serial Card (16650 UART) turns a mini-PCIe slot into four RS232 (DB9) serial ports with data rates up to 921.6 Kbps \u2013 a cost-saving solution for adding serial support to embedded systems missing the functionality.<\/p>\n<p>A native PCIe single-chip design enables you to take advantage of full PCI Express bus capability, by providing improved speed and reliability while reducing the load applied to the CPU by as much as 48% over conventional \u201cbridge chip\u201d serial cards<\/p>\n","protected":false},"featured_media":45516,"comment_status":"closed","ping_status":"open","template":"","meta":{"_acf_changed":false},"product_brand":[679],"product_cat":[680,681],"product_tag":[682,356],"class_list":["post-45515","product","type-product","status-publish","has-post-thumbnail","product_brand-startech-com","product_cat-controllers","product_cat-startech-com-controllers","product_tag-controller-card","product_tag-pci-express","first","instock","shipping-taxable","purchasable","product-type-simple"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>MPEX4S552 StarTech.com 4 Port RS232 Mini PCI Express Serial Card - Geek Tech Sol<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/geektechsol.com\/index.php\/product\/mpex4s552-startech-com-4-port-rs232-mini-pci-express-serial-card\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"MPEX4S552 StarTech.com 4 Port RS232 Mini PCI Express Serial Card - Geek Tech Sol\" \/>\n<meta property=\"og:description\" content=\"MPEX4S552 Overview The MPEX4S952 4-Port RS232 Mini PCI Express Serial Card (16650 UART) turns a mini-PCIe slot into four RS232 (DB9) serial ports with data rates up to 921.6 Kbps \u2013 a cost-saving solution for adding serial support to embedded systems missing the functionality. 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