{"id":2021,"date":"2026-04-16T14:19:14","date_gmt":"2026-04-16T14:19:14","guid":{"rendered":"https:\/\/demo.accurays.com\/ustransceivers\/product\/ust-400gbase-dr4-qsfp-dd-transceiver-for-arista-qdd-400g-dr4-ar-taa-compliant\/"},"modified":"2026-07-03T02:26:15","modified_gmt":"2026-07-03T02:26:15","slug":"ust-400gbase-dr4-qsfp-dd-transceiver-for-arista-qdd-400g-dr4-ar-taa-compliant","status":"publish","type":"product","link":"https:\/\/demo.accurays.com\/ustransceivers\/product\/ust-400gbase-dr4-qsfp-dd-transceiver-for-arista-qdd-400g-dr4-ar-taa-compliant\/","title":{"rendered":"UST 400GBASE-DR4 QSFP-DD Transceiver for Arista &#8211; QDD-400G-DR4-AR   TAA Compliant"},"content":{"rendered":"<p>The US Transceivers compatible QDD-400G-DR4-AR is a 400GBASE-DR4 QSFP-DD optical transceiver designed for high-density 400G deployments. Operating over single-mode fiber, this module utilizes four parallel lanes of 100G each at 1310 nm using PAM4 modulation, supporting link distances up to 500 meters. The QSFP-DD form factor delivers exceptional port density for modern high-performance switching and routing platforms.<\/p>\n<p>This TAA compliant module is engineered to meet IEEE 802.3bs and QSFP-DD MSA standards, ensuring reliable interoperability in demanding network environments. It features Digital Diagnostic Monitoring (DDM) for real-time visibility into key optical parameters including temperature, voltage, TX power, and RX power.<\/p>\n<p>The US Transceivers compatible QDD-400G-DR4-AR is an ideal solution for data center interconnect, high-performance computing fabrics, cloud infrastructure, and enterprise core networking, delivering carrier-grade performance at a cost-effective price point.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The US Transceivers compatible QDD-400G-DR4-AR is a 400GBASE-DR4 QSFP-DD optical transceiver designed for high-density 400G deployments. Operating over single-mode fiber, this module utilizes four parallel lanes of 100G each at 1310 nm using PAM4 modulation, supporting link distances up to 500 meters. The QSFP-DD form factor delivers exceptional port density for modern high-performance switching and [&hellip;]<\/p>\n","protected":false},"featured_media":968,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[657],"product_cat":[536,541,344],"product_tag":[],"class_list":["post-2021","product","type-product","status-publish","has-post-thumbnail","product_brand-arista","product_cat-400g-qsfp-dd-transceiver","product_cat-400gb-qsfp-dd-dr4-400g-qsfp-dd-transceiver","product_cat-sfp","pa_data-rate-400gb","pa_distance-500m","pa_product_type-single-mode","pa_wavelength-1310nm","first","instock","shipping-taxable","purchasable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/demo.accurays.com\/ustransceivers\/wp-json\/wp\/v2\/product\/2021","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/demo.accurays.com\/ustransceivers\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/demo.accurays.com\/ustransceivers\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/demo.accurays.com\/ustransceivers\/wp-json\/wp\/v2\/comments?post=2021"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/demo.accurays.com\/ustransceivers\/wp-json\/wp\/v2\/media\/968"}],"wp:attachment":[{"href":"https:\/\/demo.accurays.com\/ustransceivers\/wp-json\/wp\/v2\/media?parent=2021"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/demo.accurays.com\/ustransceivers\/wp-json\/wp\/v2\/product_brand?post=2021"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/demo.accurays.com\/ustransceivers\/wp-json\/wp\/v2\/product_cat?post=2021"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/demo.accurays.com\/ustransceivers\/wp-json\/wp\/v2\/product_tag?post=2021"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}