Not stated
Machine output
HDMI cable
Monitor input
An HDMI cable of an unstated version
At the cable, if the cable is the weakest link in the path.
LaptopGearVault
Everything plugs in. That was never the question.
PortsThe question is what the chain gives you once it does. A 144Hz monitor behind a cable of an unstated version. A USB-C port that carries power and no picture. Four wireless devices and two ports to put them in. None of that is a defect, none of it is on the front of the box, and all of it decides what the setup actually does.
Six chains · 48 listings · 2026
The most useful thing here
Where it can cap
Six paths, one row each. The middle two columns are the whole idea: what the listing says, and what it does not.
| What you plug in | What the listing states | What is not stated | Where it can cap | Read it |
|---|---|---|---|---|
| A monitor over an HDMI cable | A refresh rate, a resolution, and the word HDMI | Which HDMI version the input is, and what the cable is certified for | Not stated At the cable, if the cable is the weakest link in the path | An HDMI cable of an unstated version |
| A screen over USB-C | That there is a USB-C input, and what the panel is | Whether that USB-C port at either end carries a picture | Not stated At the machine port, if it does not support the video alternate mode | A USB-C port that carries power and not video |
| A second monitor alongside the first | What each screen is, on its own | How many external displays the machine drives | Not stated At the machine, on a figure only the manufacturer page carries | One laptop and two screens |
| A keyboard or mouse with no cable and no receiver | Bluetooth, and sometimes that no receiver is included | Whether your machine has a Bluetooth radio | Stated cap At the machine, on a radio the listing never promised | A Bluetooth-only device and a machine without Bluetooth |
| A wireless keyboard and mouse with receivers | That a receiver is included, and often which port it uses | How many USB-A ports your machine has left | Stated cap At the machine, when the ports run out | Every receiver takes a USB-A port |
| A stand or a converter under the machine | That it raises the laptop, and sometimes by how much | That the built-in keyboard rises by the same amount | Stated cap At the hinge, because a laptop is one object | The riser lifts the built-in keyboard too |
What this site does and does not do
Nothing here is measured, tested or owned. This site reads listings and separates two things that look identical on a product page: what the seller states, and what the seller has not mentioned. Where a claim needs a technical figure — a standard version, a bandwidth, a display limit — it carries a link to the body that publishes it, and where no such figure exists, the page says the listing does not state it and stops.
Six chains
Not stated
Machine USB-C port
USB-C cable
Screen USB-C input
A USB-C port that carries power and not video
At the machine port, if it does not support the video alternate mode.
Not stated
The machine
Two connections
Two screens
One laptop and two screens
At the machine, on a figure only the manufacturer page carries.
Stated cap
The machine radio
The pairing
The device
A Bluetooth-only device and a machine without Bluetooth
At the machine, on a radio the listing never promised.
Stated cap
The machine ports
The receivers
The devices
Every receiver takes a USB-A port
At the machine, when the ports run out.
Stated cap
The desk surface
The riser
What ends up raised
The riser lifts the built-in keyboard too
At the hinge, because a laptop is one object.
Tool
Link Check
Put a machine side, a screen and a mode together and see which of the three answers comes back. One of the three is that nobody says.
What is on the machine side
- Acer 27-inch Gaming Monitor KB272 G0bi, FHD IPS does not state a USB-C input, so this pairing cannot be checked.
- Acer 27-inch Gaming Monitor KB272 G0bi, FHD IPS does not state a DisplayPort input, so this pairing cannot be checked.
Which screen from the catalog
What you want out of it
Result
Machine outputHDMI
HDMI linkcable and port version
Screen inputAcer 27-inch Gaming Monitor KB272 G0bi
Panel1920x1080 · 120Hz stated
What you asked for1920x1080 · 60Hz requested
The node that decides this one is HDMI link. Read it in full on An HDMI cable of an unstated version and HDMI.
Rule applied: R-version-silent
What this tool is doing
- It compares what listings state. It does not measure anything.
- The absence of a stated cap is not a promise that a mode will work. It means no listing here claims a limit.
- Cable and port versions are settled by the manufacturer’s own documentation, not by a retail listing and not by this page.
The rules this tool follows
- R-inputA screen can only be checked against an input its own listing names. Any other pairing is switched off, with the reason printed.
- R-machine-usbcIf the machine end is USB-C with video not stated, the answer is Not stated and nothing further along the path can change it.
- R-panel-silentIf the screen listing states no resolution, or no refresh rate, the answer is Not stated: there is no figure to compare against.
- R-panel-capIf the requested resolution differs from the one the screen states, or the requested refresh rate is above the one it states, the answer is Stated cap, and the cap is at the panel.
- R-version-silentIf the screen states no version for the chosen input, the answer is Not stated: a socket name is not a bandwidth.
- R-clearOnly when the panel figures cover the request and a version is stated for the input does the answer become No stated cap. That is the absence of a stated limit, not a promise of a result.
Connector words
Five words listings use loosely
USB-C
USB-C
That the port carries video at all.
Published by USB Implementers Forum
HDMI
HDMI
Which specification version the port implements.
Published by HDMI Licensing Administrator
DisplayPort
DisplayPort
Which published version the port implements.
Published by VESA
USB-A
USB-A and 2.4 GHz receivers
That one manufacturer’s receiver will work with another manufacturer’s device.
Published by USB Implementers Forum
Bluetooth
Bluetooth pairings
That the machine has a radio to pair with.
Published by Bluetooth SIG
Scroll sideways for all five.
Numbers on the box
Measured differently by different sellers
| The number on the box | How sellers measure it | What it does not promise | Listings stating it | Page |
|---|---|---|---|---|
| HzRefresh rate in hertz | A flat figure, such as 144Hz; Up to a figure, such as up to 144Hz; No figure at all | That the figure arrives over the cable you own. | 11 | Refresh rate in hertz |
| msResponse time in milliseconds | A bare figure, such as 1ms; GtG, such as 4ms GtG; OD, such as OD 1ms | That two figures from two sellers were measured the same way. | 8 | Response time in milliseconds |
| %Color coverage as a percentage | A percentage of sRGB at or below 100; A percentage of sRGB above 100; A percentage of DCI-P3 | That a larger percentage on one scale beats a smaller one on another. | 5 | Color coverage as a percentage |
| DPIMouse DPI | A flat figure, such as 2600 DPI; Up to a figure, such as up to 4000; A count of settings, such as 3 adjustable DPI settings | That a higher figure is more accurate. | 3 | Mouse DPI |
| lbDesk load and height | A capacity in pounds; A height range in inches; Adjustable, with no figures | That a top with no stated capacity will carry the same as one with a stated capacity. | 2 | Desk load and height |
48
listings read
Across six categories, each described only from what its own seller states.
2 of 13
name an HDMI version
Of the screens here that name an HDMI input, this many say which version it is.
13
listings take a USB-A port
Counting receivers and cables together. Wireless is not the same as portless.
14
screens in the catalog
Split across three subgroups, because a screen extender is not a monitor.
Tool
Port Budget
Three listings, added up in ports and pairings. It stops before the subtraction, because the second number does not exist in any listing here.
Keyboard
Mouse
Screen
Result
2
USB-A ports occupied
0
Bluetooth pairings needed
Machine portscount not stated by any listing
USB-A occupied2
Pairings needed0
Video linkHDMI / VGA
Where each figure comes from
- KeyboardAmazon Basics Wired QWERTY Keyboard, Black
The listing states a cable, which occupies one USB-A port. 1 port, 0 pairings - MouseAcer Wireless Mouse, 1600 DPI
The listing states a receiver, which occupies one USB-A port. 1 port, 0 pairings - ScreenAcer 27-inch Gaming Monitor KB272 G0bi, FHD IPS
The listing states no receiver, cable or pairing for this item. 0 ports, 0 pairings
What these listings do not settle
- How many USB-A ports the machine has. No listing in this catalog states it, so this tool does not subtract.
- Whether the machine has a Bluetooth radio at all, which decides every pairing above.
- Acer 27-inch Gaming Monitor KB272 G0bi, FHD IPS states HDMI and VGA as inputs. Which socket that cable takes at the machine end is not stated by any laptop listing here.
The chain behind this arithmetic is Every receiver takes a USB-A port, and the connector words are decoded on USB-A and 2.4 GHz receivers and Bluetooth pairings.
The formula
Every selected item is read for one field, the connection its listing states, and that field is priced as follows. The totals above are the sum.
| Stated connection | What it costs |
|---|---|
| usb-a-receiver | 1 USB-A port |
| wired-usb-a | 1 USB-A port |
| bluetooth | 1 Bluetooth pairing |
| both | 1 USB-A port or 1 Bluetooth pairing — your choice, shown as a fork |
| not-applicable | 0 — the listing states no receiver, cable or pairing for it |
There is no subtraction step. Working out whether the total fits would need the number of ports on your machine, and no listing in this catalog states that for any machine.
About this catalog
What it is made of, and what it is not
There are 48 listings here, in six categories. They were chosen to make the chains legible, not to survey a market, and the difference matters most in one place: the laptop category holds four listings, and all four of them come from the same manufacturer. Every one is Apple. That is a narrow sample of one company’s range. It is not a picture of what is available, and nothing on this site calls any of them a best or top anything.
Three entries needed correcting rather than repeating. One is filed with the screens but clamps to a laptop lid, so it sits in a subgroup of its own and is never called a monitor. One is filed with the keyboards and has a mouse in the box, so it is counted once and the mouse is stated everywhere it appears. One is filed with the desks and is a converter that needs a desk underneath it, so it is never called a desk.
Where a listing states no figure — no port version, no refresh rate, no load capacity — the field here stays empty and says so. Substituting an average would produce a tidier table and a false one.
Six plain answers
Will this monitor run at the speed on the box?
The panel will. Whether that arrives depends on the machine, the port and the cable, and of the 13 screens here that name an HDMI input, two name a version for it.
An HDMI cable of an unstated versionMy laptop has USB-C. Can I plug a screen into it?
The cable will fit. Whether a picture comes out of that port is a separate capability from power and data, and no laptop listing in this catalog states it.
A USB-C port that carries power and not videoHow many monitors will my laptop drive?
No listing here says. That figure is published by the manufacturer on its own specification pages, and it is the one number the retail page never carries.
One laptop and two screensIs a wireless keyboard portless?
Only if it pairs. Thirteen listings here occupy a USB-A port when in use, and a receiver is a port spent for as long as the device is.
Every receiver takes a USB-A portWhy would a Bluetooth keyboard not work?
Because the machine has no radio. Six listings here state a pairing as their only route, and the box cannot tell you what your machine has.
A Bluetooth-only device and a machine without BluetoothDoes a laptop stand fix my screen height?
It raises the machine, and the built-in keyboard is attached to the machine, so both go up together. That is geometry, and this site describes it and stops there.
The riser lifts the built-in keyboard tooSix listings, one from each category
Laptop Stands
Nulaxy Adjustable Laptop Stand, Dual Foldable Riser
Its listing states 10 to 16 inches. The other three stands in this catalog stop at 15.6.
View listing
Laptops
Apple 2025 MacBook Pro 14-inch with M5 chip, Space Black
A 10-core CPU and 10-core GPU are named here. No other laptop listing in this catalog states core counts.
View listing
Monitors & Portable Screens
SANSUI 34-Inch Curved Ultrawide Monitor, UWQHD
HDMI 2.1 is named in exactly one listing across the whole catalog.
View listing
Keyboards
Logitech K250 Compact Wireless Bluetooth Keyboard, Graphite
Of the ten keyboard listings here, one spells out that no USB receiver is included.
View listing
Mice
Logitech M196 Compact Bluetooth Wireless Mouse, Rose
Of the twelve mouse listings here, one spells out that no USB receiver is included.
View listing
Desks & Converters
VIVO Electric Standing Desk DESK-KIT-1B6B, 60x24 inch, Black
220 lb is the largest capacity figure stated in this catalog, and it appears once.
View listing