DescriptionThe Waveshare CM5-NANO-B is a mini expansion board for Raspberry Pi Compute Module 5. It keeps the same compact size as the CM5 while providing key interfaces including 4K Mini HDMI, USB 3.2 Gen1, Gigabit Ethernet, dual MIPI interfaces, 40PIN GPIO and a 16PIN PCIe connector.This CM5-NANO-B mini base board is useful for CM5 evaluation, compact embedded prototypes and space-constrained end products. It supports Compute Module 5 Lite and eMMC variants; CM5, power supply, display, camera and other reference devices are not included.Features Same size as CM5, compact for narrow application environments. Mini HDMI port with 4K output for display and HMI projects. USB 3.2 Gen1 Type-A for high-speed USB devices. Gigabit Ethernet RJ45 for stable network access. Dual MIPI 4-lane interfaces for DSI displays or CSI cameras. 16PIN PCIe connector for PCIe Gen2/3 x1 expansion. 40PIN GPIO header, RTC battery header, FAN header and user button. TF card socket for Compute Module 5 Lite variants without eMMC. Specifications SKU Waveshare-30581 Product Name CM5-NANO-B Mini Expansion Board For Raspberry Pi Compute Module 5 Brand Waveshare Product Type Raspberry Pi CM5 expansion board CM5 Socket Suitable for all variants of Compute Module 5 Networking Gigabit Ethernet RJ45 connector GPIO Raspberry Pi 40PIN GPIO interface x 1 USB USB 3.2 Gen1 Type-A port x 1 MIPI MIPI 4-lane interface x 2, 22pin 0.5mm FPC connector Video Mini HDMI port x 1, supports 4K output Audio USB audio 3.5mm jack Storage TF card socket for Compute Module 5 Lite variants without eMMC Power Input DC 5V 5A PCIe 16PIN PCIe connector, PCIe Gen2/3 x1 Dimensions 55 x 41mm Official Weight 19g Applications CM5 evaluation: fast bring-up for Raspberry Pi Compute Module 5. Embedded HMI: 4K HDMI, USB and networking in one compact board. Camera or display testing: dual MIPI interfaces for DSI/CSI setups. Edge gateway prototyping: Gigabit Ethernet, PCIe and GPIO for local interfaces. Product integration: CM5-sized base board for space-saving end products. Product List CM5-NANO-B x 1 2*20PIN color-coded straight pinheader x 1 Raspberry Pi Compute Module 5 is not included Power supply, camera, display, cooler and enclosure are not included Other ContentThe official overview shows the Waveshare CM5-NANO-B as a mini base board for Raspberry Pi Compute Module 5. It matches the CM5 size and provides practical interfaces for evaluation and product integration.SKU 30581 is the standard CM5-NANO-B version; the pre-soldered-header version is a different model and is not included in this product.The compact board size matches CM5 and is useful in narrow application environments. The Compute Module 5 itself is not included.The onboard diagram identifies the CM5 socket, PCIe, TF card slot, Mini HDMI, power/programming port, RTC battery header, FAN header, RJ45 Gigabit Ethernet, USB 3.2, dual MIPI and 40PIN GPIO.The official dimension drawing helps confirm enclosure fit, port position and mechanical clearance.The Compute Module 5 reference graphic helps place the board in the CM5 ecosystem, including RAM/eMMC options and PCIe capabilities.The selection graphic shows where CM5-NANO-B fits in the Waveshare CM5 base board lineup.The package includes the CM5-NANO-B board and one 2*20PIN color-coded straight pinheader.Resources Waveshare CM5-NANO-B wiki Raspberry Pi Compute Module documentation Raspberry Pi documentation FAQIs the Waveshare CM5-NANO-B suitable for Compute Module 5?Yes. The Waveshare CM5-NANO-B is listed by Waveshare as suitable for all variants of Raspberry Pi Compute Module 5.Is a Compute Module 5 included?No. The package includes the CM5-NANO-B board and one 2*20PIN color-coded straight pinheader.What video output does the board provide?The board has a Mini HDMI port and supports 4K output according to the official specification.Which USB interface is available?It provides one USB 3.2 Gen1 Type-A port for USB devices.Can I connect cameras or displays?Yes. CM5-NANO-B provides two MIPI 4-lane interfaces with 22pin 0.5mm FPC connector.
