StarTech.com 4 Port USB VGA IP KVM Switch with Virtual Media - 4 Port Remote KVM over IP (SV441DUSBI)

Product Information

The new generation ATEN CN8000A features superior video quality with HD resolutions up to 1920 x 1200, LUC (Laptop USB Console) for easier KVM access, user-friendly local console OSD and virtual media function without additional cable. The Lenkeng LKV373A HDMI extender (left) was larger and required more connections than the HDMI dongle (right). Superior Video Quality- Supports the video resolutions up to 1600x1200@60Hz for up to 40 meters, and 1280x1024@75 Hz for up to 50 meters Laptop USB Console (LUC) – a dedicated mini USB port for direct, easy console operation via a laptop

IPEPS-PLUS: ADDERLink ipeps+ enables secure, real-time remote access to HD video from anywhere in the world usb-gadget: a script enabling Pi’s “USB gadget mode,” which allows the Pi to impersonate USB devicesNEW* Laptop USB Console (LUC) - A dedicated USB port directly connects to laptop for easy console operation

The creator of PiKVM was mentioned in a previous post about the creation of the CSI bus capture card, and a Pi hat based on this build will be available soon which would include options for ATX controls as well. Right now, though, it’s possible to build all of this on your own without the hat, and is part of what makes the Pi-KVM impressive, as well as its very low cost. On a Raspberry Pi only the USB port that receives power is capable of acting as a USB Device. The other USB ports are capable only of acting as USB Hosts. Therefore a special cable must be used on the USB power port that it can simultanously act as USB Device for the PC/server and receive external power from an official RPi adapter. For administering many computers at once, an IP KVM is an invaluable piece of equipment that makes it possible to get the job done over the network without having to haul a keyboard, monitor, and mouse around to each computer. The only downside is that they can get pricey, unless of course you can roll one out based on the Raspberry Pi and the PiKVM image for little more than the cost of the Pi itself. Enhanced capabilities of KVM over IP switches also include: a Message Board, Panel Array Mode™, Mouse DynaSync™, and Adapter ID. The server has no keyboard or monitor attached because I access it over ssh or a web interface. This is a convenient setup, but it also turns small issues into a colossal pain.

PiKVM - Open and inexpensive DIY IP-KVM on Raspberry Pi

A ready-to-use OS images and friendly build environment. The hardware can be made in half an hour and without soldering.

I wasn’t sure if this delay came from dongle itself, ffmpeg on the Pi, or ffplay on my desktop. Arsenio Dev reported latency of 20 ms, so it seemed like faster performance was possible if I delved into ffmpeg’s arcane and mysterious command-line flags.A few years ago, I built my own home server for testing software. It’s been a valuable investment, and I use it every day.

I tried playing around with ffplay’s many command-line flags to speed up the stream, but I never pushed past 800 milliseconds. And that was on my desktop with its high-end GPU and CPU. It didn’t bode well performance-wise for my scrappy little Raspberry Pi. Right out of the box, uStreamer reduced my latency from 8 seconds to 500-600 milliseconds. But it also eliminated a whole chain of extra work. Adapter ID – stores port information allowing administrators to relocate the servers to different ports, without having to reconfigure the adapters and switch Latency went from 600 milliseconds all the way down to 200 ms. It's not instantaneous, but it's low enough to forget the delay after using it for a few minutes. TinyPilot in actionSerial console management - serial terminal access. Access the CN8000 via a built-in serial viewer, or via third party software (such as PuTTY) for Telnet and SSH sessions If you're looking for a four-PC-capable KVM switch and choosing between this one and the Tcnewcl, the biggest difference is that this one has four USB ports for peripherals instead of the Tcnewcl's three. That's a lot of additional value for only a few extra dollars.