{"product_id":"jlink-arm-jtag-20-10-adapter-board-2-54mm-1-27mm-pin","title":"J-Link ARM JTAG 20-10 Adapter Board 2.54mm \u0026 1.27mm Pin","description":"\u003ch2\u003eJ-Link \/ V9 V8 ARM-JTAG 20-10 Adapter Board — 2.54mm \u0026amp; 1.27mm Pin Pitch\u003c\/h2\u003e\n\u003cp\u003eBridge the gap between standard 20-pin and compact 10-pin JTAG connectors with this versatile ARM JTAG Adapter Board. Designed for engineers, hobbyists, and embedded-systems developers, this plug-in adapter delivers a reliable, low-profile interface between J-Link debuggers and ARM MCU target boards — making firmware development and debugging faster and more convenient.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUniversal JTAG Compatibility:\u003c\/strong\u003e Works with J-Link V8, V9 and Olimex ARM-USB-OCD, ARM-USB-OCD-H, ARM-USB-TINY, and ARM-USB-TINY-H debuggers.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual Pin Pitch Support:\u003c\/strong\u003e Supports both standard 2.54mm (0.1\") and fine-pitch 1.27mm (0.05\") connectors — no separate adapters needed.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e20-Pin to 10-Pin Conversion:\u003c\/strong\u003e Seamlessly converts ARM standard 20-pin JTAG to the compact 10-pin layout used on many modern ARM MCU boards.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact Form Factor:\u003c\/strong\u003e Measures just 50mm × 40mm, making it easy to use in tight spaces on your development bench.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eARM MCU Evaluation Ready:\u003c\/strong\u003e Ideal for evaluating and debugging ARM-core microcontrollers across a wide range of development platforms.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePlug-and-Play Design:\u003c\/strong\u003e No drivers or additional software required — just connect and start debugging.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eJTAG Plug-in Adapter Board\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompatible Debuggers\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eJ-Link V8\/V9, ARM-USB-OCD, ARM-USB-OCD-H, ARM-USB-TINY, ARM-USB-TINY-H\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCore Architecture\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eARM\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePin Pitch\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2.54mm (0.1\") \u0026amp; 1.27mm (0.05\")\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eConnector Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20-pin to 10-pin JTAG\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e50mm × 40mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePackage Contents\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1× Adapter Board\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOlimex Ltd.\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMade in Mainland China\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWho Is This For?\u003c\/h3\u003e\n\u003cp\u003eThis adapter is a must-have accessory for embedded systems developers, firmware engineers, and electronics students who regularly work with ARM-based microcontrollers and need a reliable JTAG debugging interface. Whether you're prototyping a new design or debugging production firmware, this adapter simplifies your workflow.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/t2-pure-bare-copper-wire-round-solid-uncoated-0-1-2mm-10m\"\u003eT2 Pure Bare Copper Wire 0.1–2mm Round Solid Uncoated 10M\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/ball-end-hex-screwdriver-bit-magnetic-reduced-shank-steel\"\u003eBall End Hex Screwdriver Bit – Magnetic Reduced Shank Steel\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/10-pack-65mm-oscillating-multi-tool-saw-blades-high-carbon-steel\"\u003e10-Pack 65mm Oscillating Multi-Tool Saw Blades | Carbon Steel\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/eye-face-protection\" target=\"_blank\" rel=\"noopener\"\u003eOSHA on eye and face protection\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: Is this J-Link ARM JTAG adapter board compatible with both 20-pin and 10-pin JTAG connectors?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. This adapter board is specifically designed to bridge the ARM standard 20-pin JTAG interface and the compact 10-pin JTAG interface. It supports both 2.54mm (0.1\") and 1.27mm (0.05\") pin pitches, making it compatible with a wide variety of ARM MCU development boards and debuggers including J-Link V8\/V9.\u003c\/p\u003e\n\u003ch4\u003eQ: Which debuggers are compatible with this JTAG adapter board?\u003c\/h4\u003e\n\u003cp\u003eA: This adapter board is compatible with J-Link V8, J-Link V9, Olimex ARM-USB-OCD, ARM-USB-OCD-H, ARM-USB-TINY, and ARM-USB-TINY-H debuggers. It is ideal for use with ARM core microcontroller evaluation and development environments.\u003c\/p\u003e\n\u003ch4\u003eQ: Does this adapter require any additional software or drivers?\u003c\/h4\u003e\n\u003cp\u003eA: No additional drivers or software are required for this adapter board itself. It is a passive plug-in adapter — simply connect it between your debugger and the ARM MCU target board, and it will work with your existing debugging software (such as OpenOCD or J-Link software suite).\u003c\/p\u003e\n\u003ch4\u003eQ: What are the physical dimensions of this adapter board?\u003c\/h4\u003e\n\u003cp\u003eA: The adapter board measures 50mm × 40mm, offering a compact and easy-to-handle form factor that fits neatly on any development bench or inside enclosures during prototyping.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Is this J-Link ARM JTAG adapter board compatible with both 20-pin and 10-pin JTAG connectors?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. This adapter board is specifically designed to bridge the ARM standard 20-pin JTAG interface and the compact 10-pin JTAG interface. 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