There are both VGA-HDMI and HDMI-VGA easily powered from a spare USB port, sometimes even HDMI bus power. I’ve heard the data can be converted line-by-line and timings are close enough that such devices never need to hold the complete framebuffer.
> AMT is designed into a service processor located on the motherboard, and uses TLS-secured communication and strong encryption to provide additional security.[6] AMT is built into PCs with Intel vPro technology and is based on the Intel Management Engine (ME).[6] AMT has moved towards increasing support for DMTF Desktop and mobile Architecture for System Hardware (DASH) standards and AMT Release 5.1 and later releases are an implementation of DASH version 1.0/1.1 standards for out-of-band management.[7] AMT provides similar functionality to IPMI, although AMT is designed for client computing systems as compared with the typically server-based IPMI.
> To understand what PSP and ME can do you need to understand CPU security rings. https://en.wikipedia.org/wiki/Protection_ring . These are different levels of privilege software has on the system.
> Originally the Linux kernel occupies ring 0, which is the level with highest privilege. Then user space would run in some other ring.
> However with things like PSP and ME they have created rings lower then ring 0. Things like Ring -1 and -2. Intel Minix ME runs in -3 ring.
> DASH provides support for the redirection of KVM (Keyboard, Video and Mouse) and text consoles, as well as USB and media, and supports the management of software updates, BIOS (Basic Input Output System), batteries, NIC (Network Interface Card), MAC and IP addresses, as well as DNS and DHCP configuration.