Best KVM switch for a homelab desk: HDMI, DisplayPort and USB-C picks

Stop moving the keyboard every time you change computers. A desk KVM puts the screen, keyboard and mouse on one switch, so your mini PC, workstation or little cluster can take turns without taking over the desk.

Choose by the ports on your computers. For two HDMI hosts and one screen, start with StarTech SV231HU34K6. For two DisplayPort screens, use SV231DPDDUA2. The AV Access iDock C10 suits a compatible USB-C laptop plus desktop; SV431HU34K6 gives four HDMI machines a shared console.

Specs and connection requirements from the makers’ datasheets and manuals, checked October 31, 2026.

Which one do you need?

Count computer outputs before counting KVM ports. “Two-port” means two computers here, not two screens.

Your computers and screens	Pick	Connection to each computer
Two HDMI mini PCs, Pis or desktops; one HDMI screen	StarTech SV231HU34K6	One HDMI plus one USB upstream cable per host
Two desktops with two DisplayPort outputs each; two DP screens	StarTech SV231DPDDUA2	Two DP cables plus one USB upstream cable per host
A compatible USB-C laptop and a desktop; two HDMI screens	AV Access iDock C10	Laptop: one full-featured USB-C cable. Desktop: HDMI and DP and USB
Up to four HDMI computers; one HDMI screen	StarTech SV431HU34K6	One HDMI plus one USB upstream cable per host

An HDMI switch selects video; a KVM also switches your input devices. A one-host laptop dock adds ports but doesn’t select between computers. If you need to reach a boot screen over the network, use our Comet vs JetKVM vs PiKVM guide instead. These desk picks serve the seat in front of them.

The four KVMs compared

Pick	Computers / screens	Maker-rated video	USB and desk extras	Power and signal cables
StarTech SV231HU34K6	2 / 1	HDMI 2.0; 3840 × 2160 at 60 Hz	Two USB 3.0 hub ports, 5 Gbps; four HID ports; EDID emulation	Power adapter included; signal cables separate
StarTech SV231DPDDUA2	2 / 2	DisplayPort 1.2; up to 4K at 60 Hz per screen	USB 2.0, 480 Mbps; keyboard/mouse plus two shared hub ports	Power adapter included; signal cables separate
AV Access iDock C10	2 / 2	Two HDMI 2.0 outputs, up to 4K60; desktop DP 1.2a + HDMI 2.0 inputs	USB 3.0 data at 5 Gbps; up to 60 W laptop charging; laptop-only gigabit Ethernet	Power adapter and four host cables included; screen cables separate
StarTech SV431HU34K6	4 / 1	HDMI 2.0; 3840 × 2160 at 60 Hz	Two USB 3.0 hub ports, 5 Gbps; four HID ports; EDID emulation	Power adapter included; signal cables separate

The USB-C laptop’s display requirements are covered below. For every route, the host, cable and screen need to support your chosen video mode.

Two HDMI hosts: StarTech SV231HU34K6

This fills the gap in our homelab desk setup guide: a straightforward HDMI route for a pair of small machines. Each host sends video over HDMI and keyboard/mouse data over USB. The screen connects to the KVM’s console HDMI output.

StarTech documents HDMI 2.0, 4K60 and a 5 Gbps USB hub. Use the dedicated HID ports for your keyboard and mouse, leaving the two hub ports for other peripherals. Front-panel selection keeps the basic switching job simple.

For a Pi with micro-HDMI, choose the appropriate micro-HDMI-to-HDMI lead at the host end. Keep the rest of the path native HDMI. The mini PC guide helps you check the outputs before planning the desk.

Dual DisplayPort: StarTech SV231DPDDUA2

Choose this when both computers already offer two DisplayPort outputs and you want two extended screens. Each host needs a separate video connection for each screen; one DP cable doesn’t become two desktops inside this KVM.

The maker datasheet specifies dual 4K60 output, and the manual calls for DisplayPort 1.2 endpoints to reach the maximum mode. Its shared USB is USB 2.0 at 480 Mbps. That’s the important distinction from the HDMI models’ USB 3.0 hubs when you’re choosing where a fast external drive should connect.

This remains our two-screen DP pick from the desk guide. Use native DP outputs and keep the cable plan predictable.

Laptop plus desktop: AV Access iDock C10

The C10 earns its place by reducing the laptop side to one cable carrying video, USB data and up to 60 W charging. The desktop side stays conventional: HDMI + DisplayPort + USB upstream. Both screens connect to the dock’s HDMI outputs.

Choose it for a compatible Windows laptop with USB-C DisplayPort Alt Mode and MST; AV Access’s manual recommends discrete graphics for dual 4K60. On macOS, the MST route gives duplicated external screens. A charging-only USB-C port won’t carry the video this dock needs.

The gigabit Ethernet connection belongs to the USB-C laptop, not both hosts. Check that 60 W covers your laptop’s charging requirement, too. This is a laptop-and-desktop layout, not a pair of USB-C laptop inputs.

Four HDMI hosts: StarTech SV431HU34K6

Give a small cluster one local console. The SV431HU34K6 keeps the single-screen HDMI 2.0/4K60 layout, adds four host positions and retains the 5 Gbps USB hub. Select the machine you want from its front-panel buttons.

It makes sense when you regularly need a local screen on several nearby computers. Label the cables at both ends as you wire each host; the next recovery session becomes “select port three” instead of “which black lead is this?” For a server elsewhere in the building, go back to the remote KVM route.

Count the cables before you tuck it away

These counts cover host video/data links plus KVM-to-screen links. They exclude power, keyboard/mouse leads and optional audio or Ethernet. One USB-C cable carrying both video and data counts once.

Setup	Host → KVM	KVM → screens	Total signal cables
Two HDMI hosts, one screen	2 HDMI + 2 USB	1 HDMI	5
Two DisplayPort hosts, two screens	4 DP + 2 USB	2 DP	8
iDock C10 laptop + desktop, two screens	1 USB-C + 1 HDMI + 1 DP + 1 USB	2 HDMI	6
Four HDMI hosts, one screen	4 HDMI + 4 USB	1 HDMI	9

For the two-host HDMI build, that’s 2 × (1 HDMI + 1 USB) + 1 screen HDMI = 5. Add your wired keyboard and mouse leads separately.

The StarTech models include their power adapters but no signal cables. For the HDMI models, use SuperSpeed USB-A-to-USB-B upstream cables as specified in StarTech’s connection instructions. The DP model uses USB-A-to-B for its USB 2.0 path.

The C10’s manual lists four supplied host cables: USB-C, USB-A-to-B, HDMI and DP. Add two HDMI leads to your screens. In other words, its six-cable signal layout needs two extra cables, rather than six extra purchases.

Wire it once, then test every host

1. Shut down before connecting. Follow the StarTech manuals’ power-off wiring sequence, and put the KVM where its selector remains reachable.
2. Connect the console. Screen to the labelled output, keyboard and mouse to their console ports. Start with simple wired input devices.
3. Connect each host’s complete set. Video alone gives you a picture; the matching USB upstream link carries keyboard and mouse. Keep each computer’s cables on the same numbered KVM position. On the C10 desktop, connect both video inputs for two screens.
4. Use the supplied power adapter. Then select and boot each machine, following its maker’s startup sequence.
5. Check the real jobs. Type in a terminal, select each screen’s intended mode, switch away and back, and try sleep/wake. For a recovery console, also test a cold boot and firmware setup screen before putting the cables out of reach.

If the StarTech two-port HDMI model offers only 1080p, inspect its EDID mode: the manual’s Default EDID mode is 1080p. Follow its Auto or Copy instructions to use the monitor’s capabilities. If video works but typing doesn’t, trace the selected computer’s USB upstream first.

Keep a direct HDMI path available for troubleshooting. Our portable HDMI crash-cart guide covers the little screen you can bring to a stubborn box.

Match the connectors, count the upstream cables, and choose the number of hosts you actually use. Then return to the homelab desk hub for the arm, dock and cable-management pieces around your shared console.

Pair the switch with a screen that fits its outputs: our homelab monitor guide compares HDMI, DisplayPort and USB-C inputs alongside scaling and mounting fit.