DisplayPort Hub: Version, Length and Connector Gender

November 2, 2026

By ZONG Editorial Team | ZONG technical guide

Quick answer: Three checks before ordering. Version: DP 1.2 or higher at both the host and the hub, because MST is what allows separate images instead of a mirror. Length: the hub input pigtail is short by design, so count every meter in front of it, including any extension. Gender: a male plug for the host side, female outputs for the monitor cables. A DP 1.1 host will mirror, and no hub can change that.

A hub does not create bandwidth. It takes the single DisplayPort link coming from the computer and divides it among the screens plugged into it, so two 4K60 panels on a DP 1.2 hub can never both run at full rate: two such streams need roughly 25 Gbps and the link carries 21.6 Gbps. That arithmetic, not the port count on the box, decides whether a hub works in your installation.

Version decides whether the hub splits or mirrors

Multi-Stream Transport arrived with DP 1.2. It packs several independent video streams into one main link, each with its own timing, and the hub demultiplexes them into separate outputs. A DP 1.1 link carries a single stream only, so a hub attached to it has one image to work with and duplicates it on every port.

This is why identical desktops on two screens is the classic symptom of a version mismatch rather than a faulty hub.

MST needs both ends to agree

The graphics driver must enable MST on the output, and the hub must support MST 1.2 with at least two streams. If either side declines, the link falls back to single-stream mode. In Windows the switch sits in the graphics control panel, where most support calls start.

The mirror trap on older hosts

Office PCs with DP 1.1 outputs are still common on refurbished hardware. A hub on such a port shows two identical screens and the buyer assumes the hub is defective. Confirm the output version in the driver first, and treat any hub as a splitter when the host is 1.1.

Bandwidth is shared, not multiplied

Every stream competes for the same payload, so add the modes you intend to run and compare the total with the link rate.

DP 1.2 provides 21.6 Gbps raw, about 17.3 Gbps usable. DP 1.4 provides 32.4 Gbps raw, about 25.9 Gbps usable, and can lean on DSC to fit more.

Working out the stream budget

A 1920 x 1080 stream at 60 Hz needs about 3.2 Gbps of payload, a 2560 x 1440 stream about 6.5 Gbps, and a 4K60 8-bit stream about 12.5 Gbps. Three 1440p screens therefore fit inside HBR2 with margin, while two 4K60 screens do not.

DSC changes the arithmetic on 1.4 hubs

Display Stream Compression is visually lossless at the ratios used for desktop work, and both the host and each monitor must support it. On our bench a DP 1.4 hub held two 4K60 screens at 10-bit color with DSC, then fell to 4K30 on the second port when one monitor was swapped for a unit without it.

Hub type	Host interface	Outputs	Limit that bites first
DP 1.2 hub, 2 ports	DP male, short pigtail	2 x DP 1.2	Two 4K60 streams exceed the link, one drops to 30 Hz
DP 1.2 hub, 4 ports	DP male, short pigtail	4 x DP	Four 1080p60 streams fit, mixed 4K does not
DP 1.4 hub, 2 ports	DP male, short pigtail	2 x DP 1.4	Two 4K60 need DSC agreed at host and monitors
USB-C to DP hub	USB-C Alt Mode, 4 lanes	2 x DP or HDMI	4K60 at 8-bit is the practical ceiling
Monitor daisy chain	DP in and DP out	1 x DP per panel	MST must be enabled in the monitor menu

Cable length and connector gender on a hub

A hub adds a fixed input pigtail and one output cable per screen, so the electrical path is longer than the desk layout suggests.

The input pigtail is the fragile part

Most hubs ship with a 0.2 m to 0.3 m male pigtail, which is deliberate: the plug reaches the PC without an extra connector. Adding a 3 m extension in front of the hub doubles the insertion loss and adds two mated interfaces, and the hub then retrains to a lower lane rate under load.

Male input, female outputs

The gender pattern is fixed. The host side is male so it plugs straight into the graphics card, and outputs are female so you choose the length that reaches each monitor. If the hub input is female, the installation needs a separate male-to-male cable, and that cable becomes the weakest element nobody specifies.

Real installations

Two deployments show why the bandwidth sum matters more than the number of ports.

Trading desk with four 1080p screens

A four-port DP 1.2 hub fed four 1920 x 1080 panels at 60 Hz from a small-form-factor PC. Total payload was about 12.8 Gbps against 17.3 Gbps usable, and all four ran for months without a retrain. The same hub on two 4K60 panels dropped the second port to 30 Hz, as the budget predicted.

Conference room with two 4K60 displays

A DP 1.4 hub drove a projector and a confidence monitor at 4K60 with DSC enabled at both ends, over a 2 m host cable into the pigtail and 3 m outputs. When the projector was replaced by an older model without DSC, the second output fell to 4K30 and the room blamed the hub.

Frequently asked questions

What is the difference between a DisplayPort hub and a splitter?

A hub uses MST to send separate streams, so each screen can show a different image. A splitter copies one stream to several ports. Splitters are cheaper and always mirror, which is fine for signage and wrong for a desk.

Can a DisplayPort hub run two 4K monitors at 60 Hz?

Only on DP 1.4 with DSC at both the host and the monitors, or at reduced color depth. On DP 1.2 the total link is 21.6 Gbps raw, and two 4K60 streams need more than that.

Why do both of my screens show the same image?

MST is not active. Either the host output is DP 1.1, or MST is disabled in the graphics control panel, or the hub itself is a single-stream design. Check the host version first.

Does the hub need external power?

Bus-powered hubs draw from the DisplayPort connector, which has a limited current budget. Units with a DC or USB power input hold their outputs more stably when several monitors are active or when cables are long.

Can I extend the cable between the PC and the hub?

Technically yes, but each added meter and each mated pair reduces margin. If the PC is more than about 2 m away, use an active extension rather than a passive one, or move the hub closer.

Next step

Send the host output version, the mode of each screen and the distance from the PC to the desk, and we will return the hub and cable set that holds every stream. Contact the team at https://zh-zong.com/contact/, by email at zongcarrie@zh-zong.com, or by phone at +86 13543026126. Sample hubs ship with a bandwidth worksheet for checking against your own card.