Type-C.md

1 FPS = 1 Hz

/***
x y is Screen resolution
Horizontal pixels
Vertical pixels
z is Diagonal screen size inch
https://www.omnicalculator.com/other/pixels-per-inch
*/
function ppi(x,y,z){return Math.sqrt(x*x+y*y)/z;}
ppi(1920,1080,5.5);

4k@60hz : https://detail.1688.com/offer/638053096796.html
4k@30hz : https://detail.1688.com/offer/660161185254.html
820 的电视盒子 ？？三星s8=>835的电视盒子
801 only USB Type-C 3.0 雷电3肯定同时支持USB3.1，反之未必
USB3.1扩展坞=>4k60hz+5Gbps usb3.0是完全可以的，而且小新pro13支持的DP1.4模式的HBR3功能 也完全支持（ 来源于知乎网友拿显示器测得）。
vs Thunderbolt 3 https://www.dell.com/support/kbdoc/zh-cn/000145161/usb-3-1type-cthunderbolt-%E9%9B%B7%E7%94%B53-%E6%8E%A5%E5%8F%A3%E8%A7%A3%E6%9E%90

2k 144hz还是4k 60hz已经做出选择 - 知乎 https://zhuanlan.zhihu.com/p/459694201
Qualcomm Snapdragon 820 只能解码
4K HEVC video (Decode: 60 fps, 10-bit. Encode: 30 fps)
4k60hz decode 10-bit 4k60 FPS over HDMI 2.0
adb 修改window 为2k分辨率 2560 x 1440 / 4k 3840x2160？
Refresh frequency limits for standard video HDMI : https://en.wikipedia.org/wiki/HDMI#cite_ref-HDMI1.0_95-15
from https://www.qualcomm.com/content/dam/qcomm-martech/dm-assets/documents/snapdragon_product_brief_820_update062416.pdf

solution:

type-c3.1扩展坞的高频应用就是数据传输3.1gen2; 投屏hdmi 4k@60hz/ dp1.4; 充电pd100w
遥控器是问题，无线adb手机安装scrcpy ？手机蓝牙键鼠https://www.bilibili.com/read/cv4494446/ 小米蓝牙遥控
音频 可以用手机的3.5mm jack/ 蓝牙音箱
网卡芯片 linux 自带 驱动 最好 雷凌rtl
PD 2.0 供电 https://www.arrow.com/en/research-and-events/articles/usb-power-delivery-2-end-of-the-line-for-the-power-brick
手机与AENZR12合一扩展坞仍然存在兼容性问题，主要是电视或显示器分辨率无法自动匹配。
分辨率太低看电视不爽？用adb硬改分辨率手机成为2k甚至4k https://www.bilibili.com/video/av90178383
It can work, because we can have it with USB 3.1, but we need drivers/settings inside a kernel and custom rom. I have a usb 3.1 type C module who give me charge, usb 3.0 port and hdmi port, actually, only USB 3.0 port work.