https://r1.community.samsung.com/t5/support/s26-ultra-external-ssd-stuck-at-usb-2-0-speeds/m-p/37198033#M17160 <SPAN>I quickly noticed the issue when I was recording raw video to my external SSD using Motioncam Pro. After 30s the RAM buffer in Motioncam pro is filled up and the disk writing can't keep up and it started to drop frames while doing the same thing on an S25 Ultra has zero issues.</SPAN><DIV><SPAN><BR /></SPAN></DIV><DIV><SPAN>I did some disk benchmark on both devices using the same external SSD and saw the issue. On the S26 Ultra, the read and write caps at USB 2.0 speeds 40MB/s~ while on the S25 Ultra its at 420MB/s~ limited only by my external ssd enclosure (USB 3.2 Gen 1). The ssd enclosure im using is a Hagibis MC100 Pro enclosure with a Samsung PM9C</SPAN>1A 512GB. I have attached below the 2 tests I did.</DIV><DIV><BR /></DIV><div class="lia-vid-container video-embed-center"><div id="lia-vid-6390721511112w320h240r506" class="lia-video-brightcove-player-container"><video-js data-video-id="6390721511112" data-account="6058022088001" data-player="default" data-embed="default" class="vjs-fluid" controls="" data-application-id="" style="width: 100%; height: 100%;"></video-js></div><script src="https://players.brightcove.net/6058022088001/default_default/index.min.js"></script><a class="video-embed-link" href="https://r1.community.samsung.com/t5/video/gallerypage/video-id/6390721511112">(view in My Videos)</a></div><DIV><BR /></DIV><DIV><DIV><BR /></DIV><div class="lia-vid-container video-embed-center"><div id="lia-vid-6390722280112w320h240r209" class="lia-video-brightcove-player-container"><video-js data-video-id="6390722280112" data-account="6058022088001" data-player="default" data-embed="default" class="vjs-fluid" controls="" data-application-id="" style="width: 100%; height: 100%;"></video-js></div><script src="https://players.brightcove.net/6058022088001/default_default/index.min.js"></script><a class="video-embed-link" href="https://r1.community.samsung.com/t5/video/gallerypage/video-id/6390722280112">(view in My Videos)</a></div><DIV><BR /></DIV><DIV><BR /></DIV></DIV> Wed, 11 Mar 2026 04:56:21 GMT giyyatt 2026-03-11T04:56:21Z https://r1.community.samsung.com/t5/support/s26-ultra-external-ssd-stuck-at-usb-2-0-speeds/m-p/37198033#M17160 <SPAN>I quickly noticed the issue when I was recording raw video to my external SSD using Motioncam Pro. After 30s the RAM buffer in Motioncam pro is filled up and the disk writing can't keep up and it started to drop frames while doing the same thing on an S25 Ultra has zero issues.</SPAN><DIV><SPAN><BR /></SPAN></DIV><DIV><SPAN>I did some disk benchmark on both devices using the same external SSD and saw the issue. On the S26 Ultra, the read and write caps at USB 2.0 speeds 40MB/s~ while on the S25 Ultra its at 420MB/s~ limited only by my external ssd enclosure (USB 3.2 Gen 1). The ssd enclosure im using is a Hagibis MC100 Pro enclosure with a Samsung PM9C</SPAN>1A 512GB. I have attached below the 2 tests I did.</DIV><DIV><BR /></DIV><div class="lia-vid-container video-embed-center"><div id="lia-vid-6390721511112w320h240r757" class="lia-video-brightcove-player-container"><video-js data-video-id="6390721511112" data-account="6058022088001" data-player="default" data-embed="default" class="vjs-fluid" controls="" data-application-id="" style="width: 100%; height: 100%;"></video-js></div><script src="https://players.brightcove.net/6058022088001/default_default/index.min.js"></script><a class="video-embed-link" href="https://r1.community.samsung.com/t5/video/gallerypage/video-id/6390721511112">(view in My Videos)</a></div><DIV><BR /></DIV><DIV><DIV><BR /></DIV><div class="lia-vid-container video-embed-center"><div id="lia-vid-6390722280112w320h240r892" class="lia-video-brightcove-player-container"><video-js data-video-id="6390722280112" data-account="6058022088001" data-player="default" data-embed="default" class="vjs-fluid" controls="" data-application-id="" style="width: 100%; height: 100%;"></video-js></div><script src="https://players.brightcove.net/6058022088001/default_default/index.min.js"></script><a class="video-embed-link" href="https://r1.community.samsung.com/t5/video/gallerypage/video-id/6390722280112">(view in My Videos)</a></div><DIV><BR /></DIV><DIV><BR /></DIV></DIV> Wed, 11 Mar 2026 04:56:21 GMT https://r1.community.samsung.com/t5/support/s26-ultra-external-ssd-stuck-at-usb-2-0-speeds/m-p/37198033#M17160 giyyatt 2026-03-11T04:56:21Z