{"id":139491,"date":"2026-06-01T11:29:18","date_gmt":"2026-06-01T18:29:18","guid":{"rendered":"https:\/\/www.stevenrhine.com\/?p=139491"},"modified":"2026-06-03T13:58:03","modified_gmt":"2026-06-03T20:58:03","slug":"cami-research-m4-cable-tester-teardown-and-firmware-backup-soon","status":"publish","type":"post","link":"https:\/\/www.stevenrhine.com\/?p=139491","title":{"rendered":"Cami Research M4 Cable Tester Teardown and Firmware Backup (Soon)"},"content":{"rendered":"<p>Cami Research M4 Cable Tester Teardown<\/p>\n<p>I wanted a <a href=\"https:\/\/www.camiresearch.com\/cable-testers\/cable-continuity-tester.html\">Cami Research M4 Cable Tester<\/a> for personal use. I have a M3 and had an M4 on my watch list for some time this one popped up on the feebay and it was reported as dead. These m4 cable testers are sought after by personal users and business as they are exceptional in their capabilities. A lot of tech&#8217;s like my self use our personal test equipment in the shop.<\/p>\n<p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"><strong>What Is the CAMI Research M4?<\/strong><\/p>\n<p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">If you&#8217;re not familiar with the M4, it&#8217;s one of the most capable cable testers on the market. These aren&#8217;t the average $30 continuity checkers you find at a hardware store or the $500 aliexpress specials. The M4 is a professional-grade, modular cable testing platform used by manufacturers, defense contractors, aerospace, electronics technicians, and hobbyists (when they find them on the secondary market) who needs to verify complex wiring harnesses and cable assemblies with precision.<\/p>\n<p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">A brand New M4, you&#8217;re looking at roughly $4,500-$5500 for the base M4 unit. The price is not listed CAMI is one of them companies ya have to call and ask. What do they say? If you have to ask ya cannot afford it. The AEX Add-on modules run around $1,300-$1,500 each, and the adapter sets add another $300 to $400 per connector type. I have a post on the <a href=\"https:\/\/www.stevenrhine.com\/?p=136691\">Cami Research Adapter PCB Footprint<\/a> so you can make your own. If you have the pinmap or build options. A fully loaded M4 system can easily push well past $10,000 for testing common cables. These are not impulse purchases they&#8217;re capital investments.<\/p>\n<p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">Which is exactly why the used market for them is so active, and why a &#8220;dead&#8221; unit at a fraction of that price is worth a serious look. Sometimes the liquidators don&#8217;t even actually power them up they just list them as dead or untested.<\/p>\n<p>Here is the Ebay Listing Screen Shots! Bonus this one has the <a href=\"https:\/\/www.camiresearch.com\/cable-testers\/harness-testers.html\"><i>M4-AEX<\/i><\/a> and some boards with Microsoft printed on them?? Will need to research these!!<\/p>\n<p><a href=\"https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/05\/CAMI-Research-CableEye-M4-Cable-Test-System_Teardown_Anti_Repair_Ebay_2026.png\"><img decoding=\"async\" class=\"alignnone size-medium wp-image-139493\" src=\"https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/05\/CAMI-Research-CableEye-M4-Cable-Test-System_Teardown_Anti_Repair_Ebay_2026-300x150.png\" alt=\"\" width=\"300\" height=\"150\" srcset=\"https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/05\/CAMI-Research-CableEye-M4-Cable-Test-System_Teardown_Anti_Repair_Ebay_2026-300x150.png 300w, https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/05\/CAMI-Research-CableEye-M4-Cable-Test-System_Teardown_Anti_Repair_Ebay_2026-1024x512.png 1024w, https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/05\/CAMI-Research-CableEye-M4-Cable-Test-System_Teardown_Anti_Repair_Ebay_2026-150x75.png 150w, https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/05\/CAMI-Research-CableEye-M4-Cable-Test-System_Teardown_Anti_Repair_Ebay_2026-768x384.png 768w, https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/05\/CAMI-Research-CableEye-M4-Cable-Test-System_Teardown_Anti_Repair_Ebay_2026-1536x768.png 1536w, https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/05\/CAMI-Research-CableEye-M4-Cable-Test-System_Teardown_Anti_Repair_Ebay_2026-600x300.png 600w, https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/05\/CAMI-Research-CableEye-M4-Cable-Test-System_Teardown_Anti_Repair_Ebay_2026.png 1650w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><br \/>\nDescription Noting this has issues. &#8220;Unit Does Not Power On?&#8221;<br \/>\n<a href=\"https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/05\/CAMI-Research-CableEye-M4-Cable-Test-System_Teardown_Anti_Repair_Ebay_Description_2026.png\"><img decoding=\"async\" class=\"alignnone size-medium wp-image-139492\" src=\"https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/05\/CAMI-Research-CableEye-M4-Cable-Test-System_Teardown_Anti_Repair_Ebay_Description_2026-300x179.png\" alt=\"\" width=\"300\" height=\"179\" srcset=\"https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/05\/CAMI-Research-CableEye-M4-Cable-Test-System_Teardown_Anti_Repair_Ebay_Description_2026-300x179.png 300w, https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/05\/CAMI-Research-CableEye-M4-Cable-Test-System_Teardown_Anti_Repair_Ebay_Description_2026-1024x613.png 1024w, https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/05\/CAMI-Research-CableEye-M4-Cable-Test-System_Teardown_Anti_Repair_Ebay_Description_2026-150x90.png 150w, https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/05\/CAMI-Research-CableEye-M4-Cable-Test-System_Teardown_Anti_Repair_Ebay_Description_2026-768x459.png 768w, https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/05\/CAMI-Research-CableEye-M4-Cable-Test-System_Teardown_Anti_Repair_Ebay_Description_2026-1536x919.png 1536w, https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/05\/CAMI-Research-CableEye-M4-Cable-Test-System_Teardown_Anti_Repair_Ebay_Description_2026-600x359.png 600w, https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/05\/CAMI-Research-CableEye-M4-Cable-Test-System_Teardown_Anti_Repair_Ebay_Description_2026.png 1578w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><br \/>\n(Cami Research CEO\u00a0<a href=\"https:\/\/www.linkedin.com\/in\/christopher-e-strangio-cableeye-cami-research-inc-433862\/\"><em>Christopher E. Strangio<\/em><\/a> in his own words states he don&#8217;t like the idea of buying these used and broken fixing them and making a profit) that is a massive FTC Violation will they ever enforce it? probably not! Cami CEO&#8217;s intent is to <strong>&#8220;close off business opportunity for independent repair shops&#8221;<\/strong> directly describes what Strangio is doing that the FTC policy on deceptive trade practices are there to prevent.<br \/>\n<em><br \/>\n<a href=\"https:\/\/www.camiresearch.com\/ip.html\">Cami Research has this anti right to repair<\/a> statement on their site now&#8230; 100% yea we violate the law!<br \/>\n<a href=\"https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/06\/Cami-Research-Anti-Repair-Intellectual-Property-CAMI-Research-M4-Law-Violation.png\"><img decoding=\"async\" class=\"alignnone size-medium wp-image-139600\" src=\"https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/06\/Cami-Research-Anti-Repair-Intellectual-Property-CAMI-Research-M4-Law-Violation-300x136.png\" alt=\"\" width=\"300\" height=\"136\" srcset=\"https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/06\/Cami-Research-Anti-Repair-Intellectual-Property-CAMI-Research-M4-Law-Violation-300x136.png 300w, https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/06\/Cami-Research-Anti-Repair-Intellectual-Property-CAMI-Research-M4-Law-Violation-1024x466.png 1024w, https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/06\/Cami-Research-Anti-Repair-Intellectual-Property-CAMI-Research-M4-Law-Violation-150x68.png 150w, https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/06\/Cami-Research-Anti-Repair-Intellectual-Property-CAMI-Research-M4-Law-Violation-768x349.png 768w, https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/06\/Cami-Research-Anti-Repair-Intellectual-Property-CAMI-Research-M4-Law-Violation-600x273.png 600w, https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/06\/Cami-Research-Anti-Repair-Intellectual-Property-CAMI-Research-M4-Law-Violation.png 1077w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><\/em><\/p>\n<p>RCW 19.415.010(11) defines <strong>&#8220;Owner&#8221;<\/strong> as: <em>&#8220;an individual or business that owns or leases digital electronic products purchased or used in this state.&#8221;<\/em><\/p>\n<p>The obligation for original manufacturers to make parts, tools, and documentation available applies to products &#8220;first manufactured, and first sold or used in Washington, on or after July 1, 2021.&#8221; So the coverage question isn&#8217;t just about who owns the product now, but whether the product itself meets the geographic\/temporal nexus when it first entered commerce in Washington state. I will be making another request if denied another report to the AG&#8217;s office with full evidence of manufacture date and the date it entered WA State.<\/p>\n<p>June 02 2026 Box Arrived.<br \/>\n<a href=\"https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/06\/Cami-Research-M4-Cableeye-Tracking-Details.png\"><img decoding=\"async\" class=\"alignnone size-medium wp-image-139595\" src=\"https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/06\/Cami-Research-M4-Cableeye-Tracking-Details-192x300.png\" alt=\"\" width=\"192\" height=\"300\" srcset=\"https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/06\/Cami-Research-M4-Cableeye-Tracking-Details-192x300.png 192w, https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/06\/Cami-Research-M4-Cableeye-Tracking-Details-96x150.png 96w, https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/06\/Cami-Research-M4-Cableeye-Tracking-Details.png 449w\" sizes=\"(max-width: 192px) 100vw, 192px\" \/><\/a><br \/>\nBox was rather large.. and Cottie Kitty Cat had to make it hers as Always.<br \/>\n<a href=\"https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/06\/Cami-Research-M4-Cableeye-Cable-Tester-Trash-or-Treasure-Sold-as-Junk-Unboxing-scaled.jpg\"><img decoding=\"async\" class=\"alignnone size-medium wp-image-139616\" src=\"https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/06\/Cami-Research-M4-Cableeye-Cable-Tester-Trash-or-Treasure-Sold-as-Junk-Unboxing-300x169.jpg\" alt=\"\" width=\"300\" height=\"169\" srcset=\"https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/06\/Cami-Research-M4-Cableeye-Cable-Tester-Trash-or-Treasure-Sold-as-Junk-Unboxing-300x169.jpg 300w, https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/06\/Cami-Research-M4-Cableeye-Cable-Tester-Trash-or-Treasure-Sold-as-Junk-Unboxing-1024x576.jpg 1024w, https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/06\/Cami-Research-M4-Cableeye-Cable-Tester-Trash-or-Treasure-Sold-as-Junk-Unboxing-150x84.jpg 150w, https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/06\/Cami-Research-M4-Cableeye-Cable-Tester-Trash-or-Treasure-Sold-as-Junk-Unboxing-768x432.jpg 768w, https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/06\/Cami-Research-M4-Cableeye-Cable-Tester-Trash-or-Treasure-Sold-as-Junk-Unboxing-1536x864.jpg 1536w, https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/06\/Cami-Research-M4-Cableeye-Cable-Tester-Trash-or-Treasure-Sold-as-Junk-Unboxing-2048x1152.jpg 2048w, https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/06\/Cami-Research-M4-Cableeye-Cable-Tester-Trash-or-Treasure-Sold-as-Junk-Unboxing-600x338.jpg 600w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n<p>Lets unbox it and take it apart see what all the secrecy is over the internals of the device compare it to the M3U and attempt to back up the firmware (Most Likely Locked). I am sure cami Research will black list the serial numbers of this unit.<\/p>\n<p><iframe title=\"Junk or Treasure CAMI Research Cableeye M4 Unboxing and Teardown Compare to M3U\" width=\"640\" height=\"360\" src=\"https:\/\/www.youtube.com\/embed\/cLOh9T-iz_4?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\n<p>Item was very well packaged&#8230; top notch seller.<\/p>\n<p>Regardless I am a little bummed out that the thing powered on and passed the self tests? So no repair content.<br \/>\n<a href=\"https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/06\/CAMI-Research-Cableeye-M4-Self-Check-Pass-WTF.png\"><img decoding=\"async\" class=\"alignnone size-medium wp-image-139607\" src=\"https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/06\/CAMI-Research-Cableeye-M4-Self-Check-Pass-WTF-300x230.png\" alt=\"\" width=\"300\" height=\"230\" srcset=\"https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/06\/CAMI-Research-Cableeye-M4-Self-Check-Pass-WTF-300x230.png 300w, https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/06\/CAMI-Research-Cableeye-M4-Self-Check-Pass-WTF-150x115.png 150w, https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/06\/CAMI-Research-Cableeye-M4-Self-Check-Pass-WTF-768x588.png 768w, https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/06\/CAMI-Research-Cableeye-M4-Self-Check-Pass-WTF-600x460.png 600w, https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/06\/CAMI-Research-Cableeye-M4-Self-Check-Pass-WTF.png 897w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><br \/>\nI will still e-mail Cami Research and ask to buy a few of the posts they prob will not sell them all else fails can have them machined or 3d print some.<\/p>\n<p>Internal Photos.<\/p>\n<p>Main Board<br \/>\n<a href=\"https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/06\/Cami-Research-M4-Cableeye-Cable-Tester-Main-Board-Parts-Side-scaled.jpg\"><img decoding=\"async\" class=\"alignnone wp-image-139620 size-medium\" src=\"https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/06\/Cami-Research-M4-Cableeye-Cable-Tester-Main-Board-Parts-Side-300x169.jpg\" alt=\"Cami Research Cableeye M4 PCB Circuit Board Internals\" width=\"300\" height=\"169\" srcset=\"https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/06\/Cami-Research-M4-Cableeye-Cable-Tester-Main-Board-Parts-Side-300x169.jpg 300w, https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/06\/Cami-Research-M4-Cableeye-Cable-Tester-Main-Board-Parts-Side-1024x576.jpg 1024w, https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/06\/Cami-Research-M4-Cableeye-Cable-Tester-Main-Board-Parts-Side-150x84.jpg 150w, https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/06\/Cami-Research-M4-Cableeye-Cable-Tester-Main-Board-Parts-Side-768x432.jpg 768w, https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/06\/Cami-Research-M4-Cableeye-Cable-Tester-Main-Board-Parts-Side-1536x864.jpg 1536w, https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/06\/Cami-Research-M4-Cableeye-Cable-Tester-Main-Board-Parts-Side-2048x1152.jpg 2048w, https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/06\/Cami-Research-M4-Cableeye-Cable-Tester-Main-Board-Parts-Side-600x338.jpg 600w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a> <a href=\"https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/06\/Cami-Research-M4-Cableeye-Cable-Tester-Main-Board-Bottom-Side-scaled.jpg\"><img decoding=\"async\" class=\"alignnone size-medium wp-image-139619\" src=\"https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/06\/Cami-Research-M4-Cableeye-Cable-Tester-Main-Board-Bottom-Side-300x169.jpg\" alt=\"\" width=\"300\" height=\"169\" srcset=\"https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/06\/Cami-Research-M4-Cableeye-Cable-Tester-Main-Board-Bottom-Side-300x169.jpg 300w, https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/06\/Cami-Research-M4-Cableeye-Cable-Tester-Main-Board-Bottom-Side-1024x576.jpg 1024w, https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/06\/Cami-Research-M4-Cableeye-Cable-Tester-Main-Board-Bottom-Side-150x84.jpg 150w, https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/06\/Cami-Research-M4-Cableeye-Cable-Tester-Main-Board-Bottom-Side-768x432.jpg 768w, https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/06\/Cami-Research-M4-Cableeye-Cable-Tester-Main-Board-Bottom-Side-1536x864.jpg 1536w, https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/06\/Cami-Research-M4-Cableeye-Cable-Tester-Main-Board-Bottom-Side-2048x1152.jpg 2048w, https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/06\/Cami-Research-M4-Cableeye-Cable-Tester-Main-Board-Bottom-Side-600x338.jpg 600w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><br \/>\nMCU is the same Sill Labs 8051F342 that is in the <a href=\"https:\/\/www.stevenrhine.com\/?p=135149\">M3U (FPX)<\/a><br \/>\n<a href=\"https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/06\/Cami-Research-M4-Cableeye-Cable-Tester-MCU-Sillabs-8051F342-scaled.jpg\"><img decoding=\"async\" class=\"alignnone wp-image-139621 size-medium\" src=\"https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/06\/Cami-Research-M4-Cableeye-Cable-Tester-MCU-Sillabs-8051F342-300x169.jpg\" alt=\"Cami Research M4 Cableeye Cable Tester MCU Micro Controller CPU MCU\" width=\"300\" height=\"169\" srcset=\"https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/06\/Cami-Research-M4-Cableeye-Cable-Tester-MCU-Sillabs-8051F342-300x169.jpg 300w, https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/06\/Cami-Research-M4-Cableeye-Cable-Tester-MCU-Sillabs-8051F342-1024x576.jpg 1024w, https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/06\/Cami-Research-M4-Cableeye-Cable-Tester-MCU-Sillabs-8051F342-150x84.jpg 150w, https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/06\/Cami-Research-M4-Cableeye-Cable-Tester-MCU-Sillabs-8051F342-768x432.jpg 768w, https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/06\/Cami-Research-M4-Cableeye-Cable-Tester-MCU-Sillabs-8051F342-1536x864.jpg 1536w, https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/06\/Cami-Research-M4-Cableeye-Cable-Tester-MCU-Sillabs-8051F342-2048x1152.jpg 2048w, https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/06\/Cami-Research-M4-Cableeye-Cable-Tester-MCU-Sillabs-8051F342-600x338.jpg 600w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n<p>I will be doing a live stream on the backup of the attempted firmware backup of the Cami Research Cableeye M4!<\/p>\n<p>Cami Research M3Z M4 AEX Expantion Board Revision 6.1<br \/>\n<a href=\"https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/06\/Cami-Research-M3Z-M4-AEX-Expantion-Board-Revision-6.1-pcb-scaled.jpg\"><img decoding=\"async\" class=\"alignnone size-medium wp-image-139624\" src=\"https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/06\/Cami-Research-M3Z-M4-AEX-Expantion-Board-Revision-6.1-pcb-300x169.jpg\" alt=\"\" width=\"300\" height=\"169\" srcset=\"https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/06\/Cami-Research-M3Z-M4-AEX-Expantion-Board-Revision-6.1-pcb-300x169.jpg 300w, https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/06\/Cami-Research-M3Z-M4-AEX-Expantion-Board-Revision-6.1-pcb-1024x576.jpg 1024w, https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/06\/Cami-Research-M3Z-M4-AEX-Expantion-Board-Revision-6.1-pcb-150x84.jpg 150w, https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/06\/Cami-Research-M3Z-M4-AEX-Expantion-Board-Revision-6.1-pcb-768x432.jpg 768w, https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/06\/Cami-Research-M3Z-M4-AEX-Expantion-Board-Revision-6.1-pcb-1536x864.jpg 1536w, https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/06\/Cami-Research-M3Z-M4-AEX-Expantion-Board-Revision-6.1-pcb-2048x1152.jpg 2048w, https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/06\/Cami-Research-M3Z-M4-AEX-Expantion-Board-Revision-6.1-pcb-600x338.jpg 600w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n<p>The Microsoft Boards? Not Sure what system or product these are used for?<\/p>\n<p><strong>CAMI Research Right to Repair Score:<\/strong> <strong><span style=\"color: #ff0000;\">D-<\/span><br \/>\nNo Schematics, No Bill Of Material, No Service \/ Error Code Description, No Calibration Tools For After Repair Calibration, CEO Said He Don\u2019t want shops or customers repairing Second Hand Units! Reason why Not a \u201cF\u201d is when given an error code told what part failed but it took a lot to get that.<\/strong><\/p>\n<div class=\"pld-like-dislike-wrap pld-template-1\">\r\n    <div class=\"pld-like-wrap  pld-common-wrap\">\r\n    <a href=\"javascript:void(0)\" class=\"pld-like-trigger pld-like-dislike-trigger  \" title=\"\" data-post-id=\"139491\" data-trigger-type=\"like\" data-restriction=\"ip\" data-already-liked=\"0\">\r\n                        <i class=\"fas fa-thumbs-up\"><\/i>\r\n                <\/a>\r\n    <span class=\"pld-like-count-wrap pld-count-wrap\">0    <\/span>\r\n<\/div><div class=\"pld-dislike-wrap  pld-common-wrap\">\r\n    <a href=\"javascript:void(0)\" class=\"pld-dislike-trigger pld-like-dislike-trigger  \" title=\"\" data-post-id=\"139491\" data-trigger-type=\"dislike\" data-restriction=\"ip\" data-already-liked=\"0\">\r\n                        <i class=\"fas fa-thumbs-down\"><\/i>\r\n                <\/a>\r\n    <span class=\"pld-dislike-count-wrap pld-count-wrap\">0<\/span>\r\n<\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>Cami Research M4 Cable Tester Teardown I wanted a Cami Research M4 Cable Tester for personal use. I have a M3 and had an M4 on my watch list for some time this one popped up on the feebay and it was reported as dead. These m4 cable testers are sought after by personal users [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":139615,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_lmt_disableupdate":"no","_lmt_disable":"no","footnotes":""},"categories":[1],"tags":[],"class_list":["post-139491","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-stevens-posts"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.1 (Yoast SEO v27.7) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Cami Research M4 Cable Tester Teardown and Firmware Backup (Soon) - Steven Rhine - Rhine Labs Blog \/ News<\/title>\n<meta name=\"description\" content=\"Cami Research M4 Cable Tester Teardown and Firmware Backup\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.stevenrhine.com\/?p=139491\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Cami Research M4 Cable Tester Teardown and Firmware Backup (Soon)\" \/>\n<meta property=\"og:description\" content=\"Cami Research M4 Cable Tester Teardown and Firmware Backup\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.stevenrhine.com\/?p=139491\" \/>\n<meta property=\"og:site_name\" content=\"Steven Rhine - Rhine Labs Blog \/ News\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/ContractPilot\" \/>\n<meta property=\"article:author\" content=\"https:\/\/www.facebook.com\/ContractPilot\" \/>\n<meta property=\"article:published_time\" content=\"2026-06-01T18:29:18+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-06-03T20:58:03+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.stevenrhine.com\/wp-content\/uploads\/2026\/06\/Cami-Research-M4-Cableeye-Cable-Tester-Trash-or-Treasure-Sold-as-Junk-scaled.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"2560\" \/>\n\t<meta property=\"og:image:height\" content=\"1440\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Steven Rhine\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Steven Rhine\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"6 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.stevenrhine.com\\\/?p=139491#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.stevenrhine.com\\\/?p=139491\"},\"author\":{\"name\":\"Steven Rhine\",\"@id\":\"https:\\\/\\\/www.stevenrhine.com\\\/#\\\/schema\\\/person\\\/3c8de2f9dac688e562a88b86b9b140ab\"},\"headline\":\"Cami Research M4 Cable Tester Teardown and Firmware Backup (Soon)\",\"datePublished\":\"2026-06-01T18:29:18+00:00\",\"dateModified\":\"2026-06-03T20:58:03+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.stevenrhine.com\\\/?p=139491\"},\"wordCount\":823,\"publisher\":{\"@id\":\"https:\\\/\\\/www.stevenrhine.com\\\/#\\\/schema\\\/person\\\/3c8de2f9dac688e562a88b86b9b140ab\"},\"image\":{\"@id\":\"https:\\\/\\\/www.stevenrhine.com\\\/?p=139491#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.stevenrhine.com\\\/wp-content\\\/uploads\\\/2026\\\/06\\\/Cami-Research-M4-Cableeye-Cable-Tester-Trash-or-Treasure-Sold-as-Junk-scaled.jpg\",\"articleSection\":[\"Steven Rhine's Posts\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.stevenrhine.com\\\/?p=139491\",\"url\":\"https:\\\/\\\/www.stevenrhine.com\\\/?p=139491\",\"name\":\"Cami Research M4 Cable Tester Teardown and Firmware Backup (Soon) - 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