DisplayPort Versions Explained: 1.2 to 2.1, MST, and Daisy-Chaining Monitors

DisplayPort is the quiet professional of display standards: it never got HDMI's living-room fame, but it's what high-refresh gaming monitors, docks and multi-display desks actually run on. Version numbers matter more here than almost anywhere else, so here's the whole ladder in one place.

2006: a packet network for pixels

VESA — the computer display standards body — released DisplayPort 1.0 in 2006 as a royalty-free successor to VGA and DVI. Its core idea was different from HDMI's: instead of a continuous video stream, DisplayPort sends packetized data, more like a network link than a TV cable. That design is why one DisplayPort connection can later carry several displays at once, and why it adapted so easily to running over USB-C.

2010: DP 1.2 — MST and the multi-monitor desk

DisplayPort 1.2 doubled bandwidth to 21.6 Gbps (HBR2), enough for 4K at 60 Hz, and introduced Multi-Stream Transport (MST): several independent displays down one cable, either daisy-chained monitor-to-monitor or split out by an MST hub. It also standardized Mini DisplayPort, the compact connector Apple designed and every ultrabook of the era borrowed.

2016: DP 1.4 — DSC makes 4K high-refresh practical

DisplayPort 1.4 kept 1.2/1.3's HBR3 signaling (32.4 Gbps raw) but added Display Stream Compression — visually lossless compression that lets 4K 120 Hz, ultrawide high-refresh and even 8K fit through the pipe. Nearly every serious gaming monitor of the late 2010s and early 2020s is a DP 1.4 device, and it remains the safe default assumption for PC gear.

2019–2022: DP 2.0 and 2.1 — the UHBR era

DisplayPort 2.0 (2019, refined as 2.1 in 2022) tripled usable bandwidth with UHBR (Ultra High Bit Rate) signaling: UHBR10, 13.5 and 20, topping out around 77 Gbps of payload — 4K 240 Hz and 8K without breaking a sweat. The catch is the cable: full UHBR20 speeds over passive copper only work at short lengths, and certified DP80 cables exist precisely because random cables won't cut it. Sound familiar? It's the same story HDMI 2.1 and USB4 went through — every modern standard eventually collides with the physics of copper.

MST daisy-chaining in practice

To chain monitors you need: a GPU outputting DP 1.2+, monitors with a DP output port (the crucial spec most people miss — an input alone can't forward the chain), and "MST" or "DP out" enabled in the monitor menu. Bandwidth is shared, so two 1440p60 panels chain happily on 1.4 while two 4K120 panels won't. Note for Mac users: macOS historically doesn't support MST for extended desktops — dock multi-display setups there use other tricks.

One connector, three shapes

Full-size DisplayPort has a latch (press the button before pulling — yanking a latched plug is a repair bill), Mini DisplayPort dropped the latch for size, and today DisplayPort mostly travels invisibly as Alt Mode inside USB-C — the "monitor over USB-C" connection on modern laptops is DisplayPort wearing a different coat. Adapters between all three are passive and cheap; going to HDMI is a protocol conversion, which is why those adapters care about direction.

We stock VESA-certified DisplayPort cables in full and Mini, plus USB-C to DisplayPort options in our USB-C adapter lineup. Choosing between ports for a new monitor? Start with DisplayPort vs HDMI, and identify mystery ports with our monitor cable field guide.