Alt Mode
DisplayPort Alt Mode remaps USB-C SuperSpeed pins to carry video, which is why a USB-C to HDMI cable works on some ports and stays dark on others.
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189 reviews & guides.
USB 3.2
The naming mess: Gen 1 is 5 Gbps, Gen 2 is 10 Gbps, Gen 2x2 is 20 Gbps. USB-C is the plug; USB 3.2 is the data spec, not USB4.
Best Portable USB-C Monitors in 2026
Four verified portable displays for travel work, from a sturdy 60W ViewSonic to three practical budget screens under $60.
Best Laptop Stands for a Dual-Monitor Desk (2026)
Height to match an external display, solid vs folding frames, venting, and weight limits for using a laptop as a third screen on a dual-monitor desk.
Best Standing Desks for a Home Office in 2026
Stable dual-motor frames, quiet lifts, real weight ratings, and which tops still fit a 27 inch monitor arm, verified on current Amazon US listings.
What Is HDMI 2.1, and When Do You Need It?
HDMI 2.1 is the 48Gbps cable and port generation that unlocks 4K120, VRR, eARC, and more. Here is who actually needs it, and who can stay on HDMI 2.0.
The Best M.2 NVMe USB-C Enclosures in 2026
Empty USB-C cases for a spare NVMe stick, from an $18 10Gbps tool-free shell to 40Gbps USB4 boxes that can hit 3,000 MB/s on the right port.
USB4
USB4 is the USB-IF spec that tunnels data, video, and PCIe over a USB-C plug, at 20 Gbps by default and 40 or 80 Gbps when the port, cable, and device all allow it.
E-Marker
Listings call it e-Marked or 5A: the tiny chip in a USB-C plug that tells the port the cable can carry more than the safe 3A / USB 2.0 default.