{"product_id":"sonnet-twin25g-t5-dual-port-25gbe-thunderbolt-5-adapter-with-two-sfp28-transceivers","title":"Sonnet Twin25G T5 Dual-Port 25GbE Thunderbolt 5 Adapter with Two SFP28 Transceivers","description":"\u003cp\u003eIf your post-production, broadcast, or bandwidth-heavy workflows have outgrown 10GbE, the Sonnet Twin25G T5 is the upgrade your setup has been waiting for. This compact Thunderbolt 5 adapter adds dual-port 25GbE optical networking to any Mac, Windows, or Linux machine — no PCIe slot required. It ships with two 25GBASE-SR SFP28 transceivers already installed, a Thunderbolt 5 cable, and a ThunderLok connector lock, so you have everything you need to hit the ground running.\u003c\/p\u003e\n\n\u003cp\u003ePowered by a Mellanox ConnectX controller with its own onboard processing, the Twin25G T5 handles TX\/RX data independently — keeping CPU load low and throughput high. Whether you're connecting to a 25GbE switch, shared NAS storage, or directly to another 25GbE-enabled device, the adapter maintains consistent, low-latency performance. And with a second Thunderbolt 5 port built in, you're not sacrificing connectivity — you can daisy-chain additional Thunderbolt devices, connect a USB peripheral, or drive up to an 8K display from the same port.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDual-port 25GbE optical networking via Thunderbolt 5 — no PCIe slot needed\u003c\/li\u003e\n\u003cli\u003eTwo 25GBASE-SR SFP28 transceivers included and pre-installed\u003c\/li\u003e\n\u003cli\u003eBackward compatible with 10GbE — integrate now, upgrade your switch later\u003c\/li\u003e\n\u003cli\u003e80 Gbps Thunderbolt 5 interface — supports full dual-port bandwidth at maximum throughput\u003c\/li\u003e\n\u003cli\u003eSecond Thunderbolt 5 port for daisy-chaining peripherals, USB devices, or connecting up to an 8K display\u003c\/li\u003e\n\u003cli\u003eMellanox ConnectX controller with onboard processing — low CPU load, minimal latency\u003c\/li\u003e\n\u003cli\u003eSupports jumbo frames up to 9000 bytes, flow control, RSS, and TCP\/UDP\/IPv4 checksum offloading\u003c\/li\u003e\n\u003cli\u003eTemperature-controlled variable-speed fan — runs cool and nearly silent\u003c\/li\u003e\n\u003cli\u003eCompact desktop footprint — 3.0 x 11.6 x 5.9 in. (7.6 x 29.5 x 15 cm)\u003c\/li\u003e\n\u003cli\u003eThunderbolt 5 cable and ThunderLok connector lock included\u003c\/li\u003e\n\u003cli\u003e2-year product warranty with lifetime technical support\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's in the Box\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTwin25G T5 Thunderbolt 5 Adapter\u003c\/li\u003e\n\u003cli\u003eTwo 25GBASE-SR (short-range) SFP28 transceivers (pre-installed)\u003c\/li\u003e\n\u003cli\u003eUniversal 60W power adapter (100–240V, 50–60Hz)\u003c\/li\u003e\n\u003cli\u003eRegion-specific power cable\u003c\/li\u003e\n\u003cli\u003e0.8-metre Thunderbolt 5 cable\u003c\/li\u003e\n\u003cli\u003eThunderLok-A connector lock\u003c\/li\u003e\n\u003cli\u003eDocumentation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdetails open=\"\"\u003e\n\u003csummary\u003e\u003cstrong\u003eDoes the Twin25G T5 work with older Thunderbolt ports — Thunderbolt 3 or 4?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eYes. The adapter is backward compatible with Thunderbolt 3, 4, and USB4 ports. When connected to a Thunderbolt 4 or 3 computer, one 25GbE port runs at full bandwidth. Full dual-port performance requires a Thunderbolt 5 host port.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003e\u003cstrong\u003eCan I use this with my existing 10GbE infrastructure?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eAbsolutely. The Twin25G T5 supports both 25 Gbps and 10 Gbps per port, so you can connect it to your existing 10GbE switch today and upgrade to a 25GbE switch when you're ready — no need to replace the adapter.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003e\u003cstrong\u003eDo I need to install a driver?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eYes, a driver is required. On macOS, you'll configure the adapter via the Network control panel after installation. On Windows, use Device Manager. On Linux, configuration is done via the command line or a graphical utility.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003e\u003cstrong\u003eCan I connect a display to the second Thunderbolt 5 port?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eYes. The secondary Thunderbolt 5 port supports connecting one display at up to 8K resolution, depending on what your computer supports. It also provides 15W of power for bus-powered Thunderbolt or USB devices.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003e\u003cstrong\u003eWhat fibre cabling do I need?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eThe included SFP28 transceivers are 25GBASE-SR (short-range) modules for multi-mode fibre with LC connectors. For longer runs, Sonnet offers optional long-range SFP28 modules (Part No. G25E-SFP28-LR) for single-mode fibre.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch5\u003eSpecifications\u003c\/h5\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTWIN25G-T5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eForm Factor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eThunderbolt 5 25GbE adapter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e25GbE Controller\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMellanox ConnectX\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eExternal Connectors\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTwo Thunderbolt 5 ports (second port supports Thunderbolt peripheral, USB device, or display); two SFP28 sockets with two 25GBASE-SR optical transceivers; 12V power port\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNetwork Support\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e25 Gbps, 10 Gbps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eData Rates per Port\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e25 Gbps, 10 Gbps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTeaming \/ Link Aggregation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNot supported\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaximum Packet Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e9000 bytes (jumbo frames)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAdvanced Features\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFlow control, MSI, RSS (Receive-Side Scaling), Multicast filtering, 64-bit address support\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWake-on-LAN\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNot supported\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStateless Offloads\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTCP, UDP, and IPv4 checksum offloading; TRO (TCP Receive Offload)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Adapter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUniversal 60W, 100–240V, 50–60Hz, NRTL Certified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0°C to 35°C (32°F to 95°F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions — Adapter (WxDxH)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3.0 x 11.6 x 5.9 in. (7.6 x 29.5 x 15 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions — Power Adapter (WxDxH)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2.5 x 4.4 x 1.3 in. (6.4 x 11.2 x 3.3 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight — Adapter + Power Adapter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4.4 lbs. (2 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight — Complete Package\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5.8 lbs. (2.63 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompliance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRoHS 3 (Directive 2015\/863); IEC62368-1 and IEC62368-2 Safety\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTechnical Support\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLifetime\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\u003eUnited States\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.sonnettech.com\/support\/downloads\/manuals\/FSP_60W.pdf\" target=\"_blank\"\u003eDownload Power Adapter Manual (PDF)\u003c\/a\u003e\u003c\/p\u003e\n\n\u003ch5\u003eCompatibility\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eMac\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003emacOS 15 (Sequoia) or later\u003c\/li\u003e\n\u003cli\u003emacOS Tahoe compatible\u003c\/li\u003e\n\u003cli\u003eAny Mac with Thunderbolt 5, Thunderbolt 4, Thunderbolt\/USB4, or Thunderbolt 3 ports\u003c\/li\u003e\n\u003cli\u003eCompatible with all Apple M-series Macs and Intel Macs with Thunderbolt 3\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWindows\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eWindows 11\u003c\/li\u003e\n\u003cli\u003eComputer with Thunderbolt 5, Thunderbolt 4, or USB4 ports\u003c\/li\u003e\n\u003cli\u003eNote: USB4 support requires a \"USB4 Host Router (Microsoft)\" — confirm via Device Manager under Universal Serial Bus controllers\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eLinux\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLinux kernel 6.12, 6.18 or newer\u003c\/li\u003e\n\u003cli\u003eComputer with Thunderbolt 5, Thunderbolt 4, or USB4 ports\u003c\/li\u003e\n\u003c\/ul\u003e\n","brand":"Sonnet","offers":[{"title":"Default Title","offer_id":56711035322754,"sku":"TWIN25G-T5","price":927.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0842\/5707\/9599\/files\/01-hero.png?v=1781535624","url":"https:\/\/flexxmemory.co.uk\/products\/sonnet-twin25g-t5-dual-port-25gbe-thunderbolt-5-adapter-with-two-sfp28-transceivers","provider":"Flexx International Ltd","version":"1.0","type":"link"}