--- title: "USB Questions" slug: "usb-questions" tags: ["SiteManager", "FAQ"] updated: 2021-05-05T17:02:22Z published: 2021-05-05T17:02:22Z canonical: "kb.secomea.com/usb-questions" stale: true --- > ## Documentation Index > Fetch the complete documentation index at: https://kb.secomea.com/llms.txt > Use this file to discover all available pages before exploring further. # USB Questions - Can I use a USB HUB with the SiteManager? - Yes, all models can use a USB HUB to connect more USB devices. For best result, please use a USB HUB with USB 2.0, and with external power. - Can I connect from multiple LinkManagers to a single USB agent? - No, just like the Serial port, you can only connect from one LinkManager at a time. - Can I use multiple USB devices with the same Vendor/Product ID? - Yes, From Firmware version 7.0 you will be able to use multiple USB devices with the same Vendor/Product ID.