Laptop USB-C Ports Are Not Created Equal. Microsoft Wants to Change That
The USB-C port on today’s laptops can connect to accessories, transmit power to your PC, and even support an extra display. The only problem? Not every USB-C port will necessarily support data, power, or an additional display. Microsoft is trying to change that by enforcing new standards for PC vendors. In a blog post, the company revealed that many users have been encountering USB-C inconsistency issues in laptops built with USB4, the latest version of the interface. “Windows Diagnostics Data shows that 27% of PCs with USB4 have encountered a limited functionality notification, meaning that a customer plugged a USB-C device in, but a featurethat device needs was not implemented on the PC and Windows notified the user,” wrote Ugan Sivagnanenthirarajah, a technical product manager at Microsoft. That’s a problem, especially if the consumer expects that a USB-C port will support everything, including charging, data, and displays. Sivagnanenthirarajah mentions a case where the user plugged in an external display into a laptop’s USB-C port only to wonder why it didn’t work. “PC manufacturers can implement ports that look identical but differ wildly in functionality,” he added. “One may charge your laptop and run a 4K display; another might only deliver USB 2.0 data speeds. The USB specification allows this, and without clear enforcement, the consumer experiences frustration, guesswork, and endless troubleshooting.” Recommended by Our EditorsIn response, Microsoft is implementing a “minimum bar for USB-C port capabilities on PCs,” that’ll require them to support data, power charging, and a display through each connection. The company will enforce the requirement through Microsoft’s “Windows Hardware Compatibility Program,” which PC vendors can use to certify that their products have been designed to run the Windows OS. The goal is to turn optional features into mandatory ones, and “ensure a consistent level of performance you can count on,” Sivagnanenthirarajah said. “Your favorite USB 1, USB 2, and USB 3 peripherals, chargers, and displays will work exactly as advertised on any USB-C port on your WHCP-certified Windows 11 device,” he added. Specifically, a USB-C port must offer USB Power Delivery charging and DisplayPort Alt-Mode. That said, the requirements permit each USB-C ports to differ in their data transfer speeds and display resolution support. In addition, Microsoft is enforcing a requirement for laptops that advertise USB4 40Gbps or 80Gbps ports. The same laptops “must “sustain full speed 40Gbps links on all USB-C ports,” the company says. The ports also need to offer full Thunderbolt 3 compatibility, support for up to two 4K monitors at 60Hz and feature “PCI Express tunnelling that allows external GPUs and NVMe enclosures to work seamlessly.”Still, the Windows Hardware Compatibility Program is both voluntary and not widely known among consumers. So it's unclear if PC vendors will commit to the requirements. Still, Microsoft’s blog post notes: “PC manufacturers are on track to achieve WHCP compliance across most systems in the coming years.”
#laptop #usbc #ports #are #not
Laptop USB-C Ports Are Not Created Equal. Microsoft Wants to Change That
The USB-C port on today’s laptops can connect to accessories, transmit power to your PC, and even support an extra display. The only problem? Not every USB-C port will necessarily support data, power, or an additional display. Microsoft is trying to change that by enforcing new standards for PC vendors. In a blog post, the company revealed that many users have been encountering USB-C inconsistency issues in laptops built with USB4, the latest version of the interface. “Windows Diagnostics Data shows that 27% of PCs with USB4 have encountered a limited functionality notification, meaning that a customer plugged a USB-C device in, but a featurethat device needs was not implemented on the PC and Windows notified the user,” wrote Ugan Sivagnanenthirarajah, a technical product manager at Microsoft. That’s a problem, especially if the consumer expects that a USB-C port will support everything, including charging, data, and displays. Sivagnanenthirarajah mentions a case where the user plugged in an external display into a laptop’s USB-C port only to wonder why it didn’t work. “PC manufacturers can implement ports that look identical but differ wildly in functionality,” he added. “One may charge your laptop and run a 4K display; another might only deliver USB 2.0 data speeds. The USB specification allows this, and without clear enforcement, the consumer experiences frustration, guesswork, and endless troubleshooting.” Recommended by Our EditorsIn response, Microsoft is implementing a “minimum bar for USB-C port capabilities on PCs,” that’ll require them to support data, power charging, and a display through each connection. The company will enforce the requirement through Microsoft’s “Windows Hardware Compatibility Program,” which PC vendors can use to certify that their products have been designed to run the Windows OS. The goal is to turn optional features into mandatory ones, and “ensure a consistent level of performance you can count on,” Sivagnanenthirarajah said. “Your favorite USB 1, USB 2, and USB 3 peripherals, chargers, and displays will work exactly as advertised on any USB-C port on your WHCP-certified Windows 11 device,” he added. Specifically, a USB-C port must offer USB Power Delivery charging and DisplayPort Alt-Mode. That said, the requirements permit each USB-C ports to differ in their data transfer speeds and display resolution support. In addition, Microsoft is enforcing a requirement for laptops that advertise USB4 40Gbps or 80Gbps ports. The same laptops “must “sustain full speed 40Gbps links on all USB-C ports,” the company says. The ports also need to offer full Thunderbolt 3 compatibility, support for up to two 4K monitors at 60Hz and feature “PCI Express tunnelling that allows external GPUs and NVMe enclosures to work seamlessly.”Still, the Windows Hardware Compatibility Program is both voluntary and not widely known among consumers. So it's unclear if PC vendors will commit to the requirements. Still, Microsoft’s blog post notes: “PC manufacturers are on track to achieve WHCP compliance across most systems in the coming years.”
#laptop #usbc #ports #are #not