# RIPE Atlas Probe V4
If you find this device and are unaware of its purpose, please consider leaving it where it is. This is a RIPE Atlas probe, an active measurement device that someone has volunteered to host in order to help build RIPE Atlas, the largest Internet measurement network ever made. RIPE Atlas can be used by anyone to get real-time information about the Internet's connectivity and reachability.
The probe is managed by the RIPE NCC (opens new window) and it does not provide us with any information whatsoever about the content of websites visited or any other private information about the host's network.
If you send us the 12 letters/numbers printed underneath the bar code (the MAC address of this device), along with a description of where you found the device, to atlas [at] ripe [dot] net, we will try to provide you with some information about how and when this device was installed.
RIPE Atlas v4 probes are NanoPi NEO Plus2 devices with 512MB RAM and (in some batches) an added heat sink. The v4 probes do not require external storage (i.e. USB) and support Linux.
The full text of the declaration of conformity for this device is available in CE-RED SZAWW180328004.nanopi.pdf (opens new window).