{"id":49441,"date":"2026-09-08T07:13:14","date_gmt":"2026-09-08T07:13:14","guid":{"rendered":"https:\/\/geektechsol.com\/index.php\/product\/jj-p20511-s3-siig-2-port-serial-550-value-serial-adapter-pci-x-rs-232-x-2\/"},"modified":"2026-09-08T07:13:20","modified_gmt":"2026-09-08T07:13:20","slug":"jj-p20511-s3-siig-2-port-serial-550-value-serial-adapter-pci-x-rs-232-x-2","status":"publish","type":"product","link":"http:\/\/geektechsol.com\/index.php\/product\/jj-p20511-s3-siig-2-port-serial-550-value-serial-adapter-pci-x-rs-232-x-2\/","title":{"rendered":"JJ-P20511-S3 SIIG 2-Port Serial 550-Value Serial Adapter PCI-X RS-232 x 2"},"content":{"rendered":"<p>JJ-P20511-S3 Technical Specifications<\/p>\n<p>SIIG 2-Port Serial 550-Value Serial Adapter PCI-X RS-232 x 2<\/p>\n<p>Brand: SIIG<\/p>\n<p>Manufacture Part Number: JJ-P20511-S3<\/p>\n<p>Product Line: SIIG<\/p>\n<p>Model: 2-Port Serial 550-Value<\/p>\n<p>Manufacturer: Siig<\/p>\n<p>Processor<\/p>\n<p>Processor Brand: MosChip Semiconductor<\/p>\n<p>Processor Number: MCS9865<\/p>\n<p>Processors Installed: 1<\/p>\n<p>Network &#038; Communication<\/p>\n<p>Bus Voltage: Universal (3.3 V &#038; 5.0 V)<\/p>\n<p>Connectivity Technology: Wired<\/p>\n<p>Data Link Protocols: RS-232<\/p>\n<p>Data Transfer Rate: 16 MBps<\/p>\n<p>Form Factor: Plug-in card<\/p>\n<p>Host Interface: PCI-X<\/p>\n<p>PCI Specification Revision: PCI 2.3<\/p>\n<p>Product Type: Serial adapter<\/p>\n<p>Expansion Slots<\/p>\n<p>Compatible Slots Required: 1 x PCI-X<\/p>\n<p>Connectivity<\/p>\n<p>Interface Provided: 2 x RS-232 \u2013 9 pin D-Sub (DB-9)<\/p>\n<p>Port Quantity: 2<\/p>\n<p>Network &#038; Adapter Ports: RS-232<\/p>\n<p>Software<\/p>\n<p>Software Type: Driver<\/p>\n<p>Technical Information<\/p>\n<p>Product Information<\/p>\n<p>Packaged Quantity: 1<\/p>\n<p>Certifications &#038; Listings<\/p>\n<p>Compliant Standards: RoHS<\/p>\n","protected":false},"excerpt":{"rendered":"<p>JJ-P20511-S3 Overview<\/p>\n<p>SIIG\u2019s 2-port serial 550-Value is an excellent solution for you to connect additional high-speed serial-based devices to your system. It is designed to add two 9-pin (DB9) serial ports to your PCI-enabled desktop computer. This 2-port serial adapter card comes with two high-speed 16550 UART DB9 serial ports delivering data transfer rates of up to 16Mb\/s. It features IRQ sharing to reduce IRQ conflicts and deep FIFOs to enable high data throughput and reduce CPU utilization. The 2-port serial 550-Value can be installed in 32-\/64-bit, 3.3v\/5v PCI and PCI-X slots.<\/p>\n","protected":false},"featured_media":49442,"comment_status":"closed","ping_status":"open","template":"","meta":{"_acf_changed":false},"product_brand":[1091],"product_cat":[680,7309],"product_tag":[682,356,511],"class_list":["post-49441","product","type-product","status-publish","has-post-thumbnail","product_brand-siig","product_cat-controllers","product_cat-siig-controller-controllers","product_tag-controller-card","product_tag-pci-express","product_tag-rohs","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>JJ-P20511-S3 SIIG 2-Port Serial 550-Value Serial Adapter PCI-X RS-232 x 2 - 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\/jj-p20511-s3-siig-2-port-serial-550-value-serial-adapter-pci-x-rs-232-x-2\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"JJ-P20511-S3 SIIG 2-Port Serial 550-Value Serial Adapter PCI-X RS-232 x 2 - Geek Tech Sol\" \/>\n<meta property=\"og:description\" content=\"JJ-P20511-S3 Overview SIIG\u2019s 2-port serial 550-Value is an excellent solution for you to connect additional high-speed serial-based devices to your system. It is designed to add two 9-pin (DB9) serial ports to your PCI-enabled desktop computer. This 2-port serial adapter card comes with two high-speed 16550 UART DB9 serial ports delivering data transfer rates of up to 16Mb\/s. It features IRQ sharing to reduce IRQ conflicts and deep FIFOs to enable high data throughput and reduce CPU utilization. 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