The SEGGER J-Link PRO PoE (SKU 8.12.28) is a professional JTAG/SWD debug and programming probe designed for automated “test farm” and remote workflows. Powered directly by Power-over-Ethernet (IEEE 802.3af), it removes separate power bricks and simplifies rack-scale deployment. The probe can supply power to the target either via the 20-pin debug header or its USB-A port, enabling remote power-cycling as part of CI and regression testing.
J-Link PRO PoE delivers up to 4 MiB/s download speed (target-dependent) with the standard J-Link software stack: J-Link GDB Server, Ozone debugger, J-Flash, and the Unlimited Flash Breakpoints licence for efficient debugging of code running from flash. A built-in web interface and DHCP make network configuration straightforward. VCOM (virtual COM port) provides convenient UART logging without a separate USB-serial adapter.
Compatible with major IDEs on Windows, Linux and macOS and with a wide range of Arm® Cortex and other MCUs. Within the family, consider J-Link PRO (8.12.00) for non-PoE Ethernet/USB use, or J-Link ULTRA+ (8.16.28) for compact, high-speed USB with power measurement. For streaming ETM trace, see J-Trace PRO.
Engineers building reliable, scalable test infrastructure gain PoE power, remote target power control, and proven J-Link tooling—reducing setup complexity and accelerating automated validation.
- key_feature_2: PoE-Powered Operation - key_feature_2_tooltip: {"type":"root","children":[{"type":"paragraph","children":[{"type":"text","value":"Power-over-Ethernet removes external PSUs and simplifies rack deployment. One cable provides power and data, reducing failure points, tidying wiring in test farms, and enabling straightforward scaling across many benches or enclosures."}]}]} - key_feature_3: Remote Target Power Control - key_feature_3_tooltip: {"type":"root","children":[{"type":"paragraph","children":[{"type":"text","value":"Switchable power output via the 20-pin header or USB-A lets you power-cycle DUTs programmatically for CI, regression, and soak tests, avoiding manual intervention and reducing time spent recovering wedged boards."}]}]} - key_feature_4: High Download Throughput - key_feature_4_tooltip: {"type":"root","children":[{"type":"paragraph","children":[{"type":"text","value":"Up to 4 MiB/s download accelerates flash-test-iterate cycles. Faster programming means more test runs per hour, improving fault isolation and shortening time to confirm fixes on multiple device variants."}]}]} - key_feature_5: Unlimited Flash Breakpoints - key_feature_5_tooltip: {"type":"root","children":[{"type":"paragraph","children":[{"type":"text","value":"Place breakpoints in flash beyond the MCU’s hardware limit. This enables realistic debugging of production-like builds without moving code to RAM or restructuring, saving engineering time on complex issues."}]}]} - key_feature_6: Built-In Web Interface & DHCP - key_feature_6_tooltip: {"type":"root","children":[{"type":"paragraph","children":[{"type":"text","value":"Discover, configure, and monitor the probe via a browser. DHCP enables plug-and-play network setup, while the web UI provides status and configuration without extra software, ideal for shared lab infrastructure."}]}]} - key_feature_7: VCOM For UART Logging - key_feature_7_tooltip: {"type":"root","children":[{"type":"paragraph","children":[{"type":"text","value":"Virtual COM port routes target serial output through the probe. Capture logs and CLI access over the same connection, avoiding extra USB-serial dongles and freeing ports on headless runners."}]}]} - key_feature_8_tooltip: {"type":"root","children":[{"type":"paragraph","children":[{"type":"text","value":"Works with popular IDEs and toolchains on Windows, Linux, and macOS, and supports a wide device list, easing adoption across teams and product lines without toolchain lock-in."}]}]} - key_feature_8: Broad IDE & MCU Support - why_people_choose_3_title: Reduce Lab Complexity - why_people_choose_2_title: Accelerate Debug Cycles - why_people_choose_1_title: Scale Test Farms Reliably - why_people_choose_1: PoE, remote power switching, and Ethernet make unattended, parallel testing robust across many nodes. - why_people_choose_3: One-cable PoE and VCOM minimise extra adapters, bricks, and cabling in shared lab racks. - why_people_choose_2: High download rates and Unlimited Flash Breakpoints shorten build-flash-debug loops significantly. - 1567902: What makes J-Link PRO PoE suited to test farms?***SIMP***PoE power plus switchable target power let you deploy many probes with one cable each and power-cycle DUTs remotely. For non-PoE Ethernet, see the J-Link Pro. - 1567903: Can it power the target device?***SIMP***Yes. When PoE-powered, the probe can supply target power via the debug header or USB-A, enabling scripted power-cycles during automated tests. - 1567904: How fast is programming?***SIMP***Up to 4 MiB/s (target-dependent). This reduces turnaround between builds during CI and interactive debugging. - 1567905: Does it support SWD, JTAG, and SWO?***SIMP***Yes. It supports standard Arm JTAG/SWD; SWO is available on supported MCUs for printf-style logging and event tracing. - 1567906: How does PRO PoE differ from J-Link PRO?***SIMP***Functionally similar, but PRO PoE adds PoE power and remote target power output for farm use. - 1567907: Do I need special software licences?***SIMP***Unlimited Flash Breakpoints, J-Flash, Ozone, and J-Link GDB Server are included in the J-Link Software & Documentation Pack. - 1567909: Is ETM instruction trace supported?***SIMP***For continuous ETM streaming trace, choose the J-Trace. J-Link can read ETB where available, but is not a substitute for the J-Trace. - 1567911: Does it work with my IDE?***SIMP***J-Link integrates with major IDEs and debuggers on Windows, Linux, and macOS via the J-Link DLL or GDB Server. - 1567913: Can I access it remotely over the network?***SIMP***Yes. Use Ethernet and SEGGER’s Remote Server for LAN/WAN access. PoE simplifies remote placement in racks and enclosures. - 1567914: What are related alternatives in the J-Link range?***SIMP***For compact USB with power measurement, see the J-Link Ultra. For streaming trace and coverage, see J-Trace.