[
    {
        "role": "user",
        "content": "on%20thinkpad%20x1%20gen%2010%2C%20which%20usb%20port%20is%20fastest.%20where%20is%20it%20located%3F"
    },
    {
        "role": "assistant",
        "content": "It depends on which \u201cX1 Gen 10\u201d model you mean (e.g. the *ThinkPad X1 Carbon Gen 10* vs. the *ThinkPad X1 2-in-1 Gen 10*), but broadly, the fastest USB ports are always the **USB-C / Thunderbolt 4 / USB4 40 Gbps** ports. These offer the highest data transfer speeds on those models. Below are details for both models, and exactly *where* those fastest ports are located.\n\n---\n\n## ThinkPad X1 Carbon Gen 10\n\n### What ports it has\n- 2 \u00d7 Thunderbolt 4 / USB4 ports (40 Gbps) ([lenovo.com](https://www.lenovo.com/us/en/p/laptops/thinkpad/thinkpadx1/thinkpad-x1-carbon-gen-10-%2814-inch-intel%29/21ccs9k100?utm_source=openai))  \n- 2 \u00d7 USB-A 3.2 Gen 1 (5 Gbps) ([lenovo.com](https://www.lenovo.com/us/en/p/laptops/thinkpad/thinkpadx1/thinkpad-x1-carbon-gen-10-%2814-inch-intel%29/21ccs9k100?utm_source=openai))  \n- 1 \u00d7 USB-A 3.2 Gen 1 (Always On) ([psref.lenovo.com](https://psref.lenovo.com/syspool/Sys/PDF/ThinkPad/ThinkPad_X1_Carbon_Gen_10/ThinkPad_X1_Carbon_Gen_10_Spec.html?ver=c252d6b9-ba20-4aae-b998-a9bb80aa242c&utm_source=openai))  \n\n### Which is fastest\n- The fastest ports are the **two Thunderbolt 4 / USB4 ports**, since 40 Gbps is higher than the 5 Gbps of the USB-A ports. ([psref.lenovo.com](https://psref.lenovo.com/syspool/Sys/PDF/ThinkPad/ThinkPad_X1_Carbon_Gen_10/ThinkPad_X1_Carbon_Gen_10_Spec.html?ver=c252d6b9-ba20-4aae-b998-a9bb80aa242c&utm_source=openai))\n\n### Where are they located\n- On the **left side** of the laptop: *both* Thunderbolt / USB-C 40 Gbps ports. ([howtogeek.com](https://www.howtogeek.com/851035/lenovo-thinkpad-x1-carbon-gen-10-laptop-review/?utm_source=openai))  \n- On the right side are the USB-A ports and headphone jack. ([howtogeek.com](https://www.howtogeek.com/851035/lenovo-thinkpad-x1-carbon-gen-10-laptop-review/?utm_source=openai))\n\n---\n\n## ThinkPad X1 2-in-1 Gen 10\n\n### What ports it has\n- 2 \u00d7 USB-C / Thunderbolt 4 / USB4 40 Gbps ports ([psref.lenovo.com](https://psref.lenovo.com/syspool/Sys/PDF/ThinkPad/ThinkPad_X1_2_in_1_Gen_10/ThinkPad_X1_2_in_1_Gen_10_Spec.pdf?utm_source=openai))  \n- 2 \u00d7 USB-A 3.2 Gen 1 (one \u201cAlways On\u201d) \u2013 5 Gbps ([psref.lenovo.com](https://psref.lenovo.com/syspool/Sys/PDF/ThinkPad/ThinkPad_X1_2_in_1_Gen_10/ThinkPad_X1_2_in_1_Gen_10_Spec.pdf?utm_source=openai))  \n\n### Which is fastest\n- Again, the **Thunderbolt 4 / USB4** ports are the fastest available (40 Gbps). ([psref.lenovo.com](https://psref.lenovo.com/syspool/Sys/PDF/ThinkPad/ThinkPad_X1_2_in_1_Gen_10/ThinkPad_X1_2_in_1_Gen_10_Spec.pdf?utm_source=openai))  \n\n### Where they are located\n- Usually, **one USB-C / TB4** port is on each side (left and right) of the laptop\u2019s chassis. ([download.lenovo.com](https://download.lenovo.com/manual/thinkpad_x1_2in1_gen10/user_guide/de/Features_and_specifications.html?utm_source=openai))  \n- The USB-A ports are also split: one USB-A on the left, another on the right. ([lenovo.com](https://www.lenovo.com/us/en/p/laptops/thinkpad/thinkpadx1/len101t0112/len101t0112?utm_source=openai))  \n\n---\n\n## Practical Notes\n\n- If you need maximum speed (for things like fast external SSDs, docking, display bandwidth, etc.), always use one of the Thunderbolt-4 / USB4 Type-C ports.  \n- Make sure your cable is rated for 40 Gbps; many USB-C cables are only 10 Gbps or 20 Gbps.  \n- Some ports are marked \u201cAlways On\u201d \u2013 useful for charging devices when the laptop is off, but not relevant to the maximum transfer speed.  \n\n---\n\nIf you tell me your exact model (Carbon vs. 2-in-1) or send a photo of the side view, I can mark exactly which physical port is the fastest for *your* machine."
    }
]