How to identify different classes of KVM switches
If your KVM switch does not allow you to switch ports/channels by hitting the hot-key combinations, then you have a "HUB class" KVM switch. For the "Emulated KVM Switch class,” you’ll find that there is a specifically assigned USB port that you can plug your keyboard into for the hot-key commands. For both "Semi-DDM class" and "DDM class" KVM switches, there is no difference in which DDM port you can plug your keyboard into for the hot-key commands. As long as you plug in the keyboard or the wireless USB dongle to one of the DDM ports (normally there are at least two DDM ports/ KVM switch) you will have hot-key commands. Most importantly, you could have up to two connected keyboards (one for each DDM port) and the hot-key commands would work on both keyboards between all of the connected systems. The difference between "Semi-DDM" and "DDM" KVM switches are: 1. Semi-DDM switches still cause delays (but very short) when swit
Updated on 6/15/2023. Since the advanced DDM-class DP 1.4 product line had been released in 2019, there had been upgraded 3 major upgrades in hardware and firmware already.
ReplyDeleteFor example, the new 2-port DP1.4 models now are very stable in supporting 4K144hz 8/RGB video sharing and switching. 4-port models are stable in supporting up to 4K120hz.