StarTech.com 4 Port DisplayPort KVM Switch - DP KVM Switch with Audio and Built-in USB 3.0 Hub for Peripherals - 4K 30Hz (SV431DPU3A2) - KVM / USB switch - 4 ports - rack-mountable
This 4-Port USB DisplayPort KVM Switch combines the next generation of digital display interface standards with seamless KVM control of connected PC or Mac computers.
The SV431DD2DUA 4-port Dual DVI USB KVM Switch allows up to four PCs, each with dual DVI video outputs, to share two monitors, one microphone and set of speakers, one keyboard and one mouse as well as two other USB peripherals.
StarTech.com 4-Port Dual Monitor HDMI KVM Switch with Audio & USB 3.0 hub - 4K 30Hz -
The SV431DDVDUA 4-port DVI VGA dual monitor KVM switch lets you control 4 Dual Display computers using a single USB mouse and keyboard peripheral set.
StarTech.com 4 Port DVI Video Splitter with Audio - 1 x DVI-I (Dual-Link) Video In
StarTech.com 4 Port Gigabit Midspan - PoE+ Injector - 802.3at and 802.3af - 52 V DC Output - Black
StarTech.com 4 Port Gigabit Midspan - PoE+ Injector - 802.3at and 802.3af - Wall-mountable Power over Ethernet Midspan (POEINJ4G) - PoE injector - 120 Watt
StarTech.com 4 Port Gigabit NIC PCIe Network Card - Quad Port Adapter (ST1000SPEX43) - network adapter - PCIe - Gigabit Ethernet x 4
StarTech.com 4-Port HDMI Automatic Video Switch - 4K 2x1 HDMI Switch - 3840 × 2160 - 4K