 SCP-003 consists of two related components of separate origin. SCP-003-1 appears to be composed of chitin, hair, and nails of unknown biology, arranged in a configuration similar to that of a computer motherboard. Testing reveals SCP-003-1 to pre-date earliest known circuit boards by a factor of thousands of years. SCP-003-1 is considered sentient, but not actively dangerous except under certain conditions. SCP-003-1 was found on a stone tablet, SCP-003-2, on which it currently resides. The runes on SCP-003-2 are not part of any known language and emit pale flickering light patterns. SCP-003-2 is controlled by a non-biological internal computer, the contents of which are mostly inaccessible without risk of damaging SCP-003-2.