Tool
Port Budget
Wireless is not portless. Pick from the 10 keyboards and 12 mice in this catalog, add a screen, and this counts what their listings actually cost you. It will not tell you whether that fits, and the reason is printed below the formula.
Keyboard
Mouse
Screen
Result
2
USB-A ports occupied
0
Bluetooth pairings needed
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.
For the video side of the same desk, use Link Check. Both are listed on Tools.