DescriptionThe Waveshare PCIe TO 4-CH PCIe HAT is a 4-channel PCIe FFC adapter board for Raspberry Pi 5. It expands the Raspberry Pi 5 16PIN PCIe Interface to four PCIe FFC connectors and is designed for builds that combine or stack multiple PCIe HATs.With PCIe Gen2 / PCIe 2.0 only, a power monitoring chip, onboard EEPROM and official heatsink-installation guidance, this Raspberry Pi 5 PCIe HAT is useful for prototypes, storage adapters, network HATs, test rigs and modular Raspberry Pi 5 labs. Raspberry Pi 5 and additional HATs are not included.Features 4-ch PCIe FFC expansion: expands the Raspberry Pi 5 PCIe interface to four FFC connectors. Raspberry Pi 5 design: based on the 16PIN PCIe Interface of Raspberry Pi 5. PCIe Gen2 support: the official page lists PCIe Gen2 / PCIe 2.0 only. Stacking multiple PCIe HATs: flexible combination for multiple PCIe HATs in one build. Onboard monitoring: power monitoring chip and EEPROM shown in the official detail graphic. Mechanical details: official images show heatsink installation, outline dimensions and package content. Specifications SKU Waveshare-31527 Official SKU 31527 Part No. PCIe TO 4-CH PCIe HAT Product Name Waveshare PCIe TO 4-CH PCIe HAT For Raspberry Pi 5 Product Type Raspberry Pi 5 PCIe HAT / PCIe FFC adapter board Compatibility Raspberry Pi 5 16PIN PCIe Interface Expansion 4-ch PCIe FFC connectors for multiple PCIe HATs PCIe Standard PCIe Gen2 / PCIe 2.0 only according to the official page Host Connection 16PIN PCIe cable to Raspberry Pi 5 Onboard Functions Power monitoring chip and EEPROM according to the official detail graphic Stacking Supports stacking multiple PCIe HATs Installation Heatsink installation and mechanical mounting shown on the official detail page Weight 0.036 kg according to the official package-content tab Applications Raspberry Pi 5 PCIe expansion: plan multiple PCIe HATs or FFC-based add-ons. Storage and networking prototypes: combine PCIe HATs for storage, Ethernet or M.2 setups. Lab testing: check HAT compatibility, cable routing and stack layout on Raspberry Pi 5. Maker integration: build compact multi-HAT systems with defined PCIe Gen2 behavior. Product List PCIe TO 4-Ch PCIe HAT x1 Other ContentThe overview shows the Waveshare PCIe TO 4-CH PCIe HAT as a Raspberry Pi 5 adapter board. It expands the 16PIN PCIe Interface to four PCIe FFC connectors.The official connection graphic shows the adapter linked to Raspberry Pi 5 through a 16PIN cable. Raspberry Pi 5 and additional PCIe HATs are reference devices and are not included.The board provides four PCIe FFC connectors for flexible combinations when multiple PCIe HATs need to be stacked in a Raspberry Pi 5 build.The official page lists PCIe Gen2 / PCIe 2.0 only, which is important for bandwidth expectations and HAT compatibility planning.The detail graphic identifies the power monitoring chip and EEPROM. These components help with power monitoring and HAT identification in a Raspberry Pi 5 system.The installation images show heatsink mounting, outline dimensions and package content. They help confirm space, assembly and what is included before installation.Resources Waveshare Wiki for PCIe TO 4-CH PCIe HAT Raspberry Pi PCIe documentation Raspberry Pi configuration documentation FAQWhat is the Waveshare PCIe TO 4-CH PCIe HAT used for?It expands the Raspberry Pi 5 16PIN PCIe Interface to four PCIe FFC connectors for multiple PCIe HATs.Does this board support PCIe Gen3?The official product page lists PCIe Gen2 / PCIe 2.0 only. Plan bandwidth and compatibility around that limit.Is a Raspberry Pi 5 included?No. The package lists PCIe TO 4-Ch PCIe HAT x1; Raspberry Pi 5 and additional PCIe HATs are required separately.Can I stack multiple PCIe HATs?Yes. The official description says it supports flexible combinations for easy stacking of multiple PCIe HATs.Why do EEPROM and power monitoring matter?EEPROM and the power monitoring chip help with HAT identification and power monitoring in a Raspberry Pi 5 build.
