# USBKill V4

> A USB surge tester that discharges high voltage into a port to test hardware protection, with an internal battery for offline testing.

- **Category:** Instruments
- **Availability:** Listed by maker
- **Price:** €135, checked 2026-09-17
- **Good for:** Test whether hardware survives a USB power surge.
- **You'll need:** Hardware you own or are authorised to destroy; it usually breaks unprotected devices.
- **Trade-off:** Destructive by design.
- **Page:** https://gadgets.sh/devices/usbkill-v4/

## Where to buy

| Shop | Status | Link |
|---|---|---|
| Lab401 | Orderable | https://lab401.com/products/usbkill-v4-pro-kit?utm_source=gadgets.sh&utm_medium=referral&utm_campaign=usbkill-v4&utm_content=api |
| USBKill | Orderable | https://usbkill.com/products/usbkill-v4?utm_source=gadgets.sh&utm_medium=referral&utm_campaign=usbkill-v4&utm_content=api |

## Blueprint

**Closed design.** Lab401 sells USBKill V4 as a finished commercial device; no schematic, firmware source, BOM, or chip list is published, only a marketing product page.

_Notes:_ lab401.com/products/usbkill-v4-pro-kit curl-verified 200 but contains no engineering documents. GitHub search for 'usbkill' returns only the unrelated hephaest0s/usbkill software project (a Linux anti-forensic script), not this hardware device. Maker does not disclose MCU/BLE chip used in the remote.

## Specifications

### Core hardware

| | |
|---|---|
| Processor and memory | Not published by the maker |
| Display | None |
| Radios | Bluetooth LE remote control |
| Power | Internal rechargeable battery for offline use |

### Details from the product page

| | |
|---|---|
| How it works | Takes power from the USB lines, multiplies it and discharges it into the data lines |
| Attack modes | Smartphone control, BLE remote, time delay, hidden magnet trigger and classic |
| Adaptors | More than 15, including Lightning, USB-C, micro-USB, Ethernet, HDMI and DisplayPort |
| Offline mode | The internal battery lets it test a device that is powered off |
| Included shield | The USBKill V4 Shield detects and deflects surges and works as a USB data blocker |

### Buying

| | |
|---|---|
| Price | €135 on lab401.com |
| Availability | In stock on the day of review |

## Documentation

- [Distributor product page](https://lab401.com/products/usbkill-v4-pro-kit)

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Source: gadgets.sh · https://gadgets.sh/devices/usbkill-v4/ · JSON: https://gadgets.sh/api/v1/devices/usbkill-v4.json