Astera Labs Brings Aries Smart Retimers for Interconnects

Astera Labs, a pioneer in connectivity solutions for intelligent systems, has announced that its Aries Smart Retimers designed to PCI Express® (PCIe®) 4.0 architecture (PT4161L) have entered mass production while Aries Smart Retimers designed to PCIe 5.0 architecture (PT5161L) are actively being sampled with strategic customers, the company said.

Aries Smart Retimers are the industry´s first pin compatible PCIe 4.0 and 5.0 retimer upgrade solution with successful deployment at multiple cloud and server OEMs, and interoperability testing alongside CPU, GPU and end point vendors.

Astera Labs Inc., a fabless semiconductor company headquartered in the heart of California´s Silicon Valley, is a provider of purpose-built connectivity solutions for data-centric systems. The company´s product portfolio includes system-aware semiconductor integrated circuits, boards and services to enable robust PCIe technology connectivity.

PCI-SIG is the consortium that owns and manages PCI specifications as open industry standards. The organization defines industry standard I/O (input/output) specifications consistent with the needs of its members. Currently, PCI-SIG is comprised of over 830 industry-leading member companies. To join PCI-SIG, and for a list of the Board of Directors, visit