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Aim DevicesBuilt by FERRUM

FERRUM

A mouse or keyboard passthrough at up to 8000 Hz that takes commands from your second computer. KMBox B+ Pro compatible.

$160.00
In stock
1
Free shipping
Tracked to your door
3-month warranty
Replaced if faulty
Tested
Checked before it ships
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What this is

FERRUM sits between your mouse or keyboard and your main PC and passes everything through at up to 8000 Hz. It is KMBox B+ Pro compatible, so software made for a B+ Pro works with it as it is.

What it does

  • Passes your mouse or keyboard through.
    Hold FERRUM with the ports pointing towards you. Your mouse or keyboard plugs into the USB-A port in the middle. The USB-C port on your left goes to your main PC, where FERRUM presents itself as an input device.
  • Takes commands from your second computer.
    The USB-C port on the right goes to the second computer, which opens a serial port and sends commands. You choose in the utility whether FERRUM presents as a mouse, a keyboard, or both.
  • Reports up to 8000 times a second.
    MAKCU is full speed, so it stops at 1000 Hz whatever firmware it runs.

Good to know

  • 8000 Hz is the most it can carry.
    Your mouse still reports at its own rate. A 1000 Hz mouse gives you 1000 Hz. Your main PC and the game have to keep up as well.
  • Software isn't included.
    We don't sell software. You get it yourself, and it runs on your second computer. Which DMA software to get has what we suggest.
  • A drop-in for a KMBox B+ Pro.
    Your existing software and wiring keep working.
  • Wireless works too.
    A wireless mouse or keyboard works through its own USB receiver. Bluetooth does not go through it.
  • We recommend MAKCU for most people.
    FERRUM's one edge is 8000 Hz, and it is the easy swap if you are replacing a KMBox B+ Pro. For everything else, MAKCU does the same job for $25. MAKCU vs FERRUM says why that matters.
  • Not plug and play on the second computer.
    You install the CP210x serial driver and the Ferrum Utility there before a COM port appears.
  • Tested before it ships.
    Every unit is tested. Free tracked shipping and three months of warranty.
  • Full setup.
    FERRUM setup goes through the wiring, the driver, the utility and your software.

Paying

  • Crypto only. Never sent it before? How to pay with crypto shows you how. About ten minutes the first time.
  • Crypto payments are final. Unlike a card, a crypto payment cannot be charged back, and crypto sent to the wrong address or network is gone for good. There are no returns on hardware, and the warranty covers faults. Check our terms before you pay.
What arrives
  • 1x FERRUM device

  • 2 USB-A to USB-C cables

  • A 3D printed case

Our boxes come with everything you need. Once you have ordered, support is a ticket in our Discord.

Before you buy
Not sure it's right for you?

We recommend MAKCU. FERRUM is only worth it for an 8000 Hz mouse, or to replace a KMBox B+ Pro. Why we recommend MAKCU goes through it. Still not sure? Ask on the forum, where the answer helps the next person too, or in our Discord.

Specifications

What it is
Type
Mouse and keyboard passthrough, input relay
Recommended for
An 8000 Hz mouse, or replacing a KMBox B+ Pro. For everything else, we recommend MAKCU
Command set
KMBox B+ Pro compatible. Not a drop-in for MAKCU, the two speak different command sets
Performance
Polling rate
Up to 8000 Hz
Input support
Mice
Supported
Keyboards
Supported
Wireless
Yes, with its own USB receiver. Not Bluetooth
Device modes
Mouse, keyboard, or both
Ports and setup
Left port
USB-C. To your main PC, on a motherboard port, not the front of the case
Middle port
USB-A. Your mouse or keyboard, wired or wireless with its own USB receiver. One device at a time
Right port
USB-C. To your second computer
USB hubs on the input port
Not supported. It only passes through one device, confirmed by Ferrum
Software and firmware
Serial driver
CP210x, installed on the second computer
Utility
Ferrum Utility, installed on the second computer
Firmware updates
TBD

Questions

Reviews

Nobody has reviewed this yet.

Reviews come from paid orders only, so there are none until somebody who bought this writes one.

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What customers say about MewDMA
.smileyface2042
Sep 19, 2026

+rep 10/10 love mew

mqzxmasslgc
Sep 3, 2026

+rep #mitm-mew ud asf and pretty cool functions