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I use a Lenovo T480 laptop for work and I bought two HP VH240a monitors to use while I am working from home. Both monitors work individually, but the laptop only has one HDMI port. To try and connect the second monitor, I am going from usb to usb-c to hdmi to the monitor, but cannot detect an input signal. If I try plugging the usb-c adapter into the usb-c/charging port, I can get the second monitor to display only if I disconnect the first monitor.

What can I do to get both monitors to display at the same time?

My system specs are:

  • 8th Generation Intel® Core™ i5-8250U (1.60GHz, up to 3.40GHz with Turbo Boost, 6MB Cache)
  • Operating System Windows 10 Home
  • Graphics Integrated Intel® UHD Graphics 620 Memory 8GB
  • DDR4 2400MHz
  • Storage 512GB SSD PCIe
  • Display 14.0" FHD (1920 x 1080) IPS, anti-glare, 250 nits
  • Ports
    • 2 x USB 3.1 Gen 1** (one Always On)
    • 1 x USB 3.1 Gen 1 Type-C (Power Delivery, DisplayPort, Data transfer)
    • 1 x USB 3.1 Gen 2 Type-C / Intel Thunderbolt 3 (Power Delivery, DisplayPort, Data transfer)
  • 4-in-1 SD card reader (SD, MMC, SDHC, SDXC)
  • HDMI
  • RJ45 Gigabit Ethernet
  • Optional Smart card reader
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The official answer from the Lenovo forum is NO.

In order to use 2 monitors with your Lenovo T480 is to buy a docking station

However although this is the official answer theres some users claiming that you can use the USB 3.1 Gen 2 Type-C / Intel Thunderbolt 3 to use up to 2 monitors WITH AN STARDARD USB TB3 HUB Possible connection setup =

Lenovo T480 HDMI out port --> HDMI to HDMI cable --> #1 VH240a HDMI in port

Lenovo T480 USB 3.1 Type-C Gen 2/TB3 --> USB-C 3.1 TB3 to HDMI cable --> #2 VH240a HDMI in

Src 1 - Lenovo Forum

Src 2 - Dell Forum

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