single attachment concentrator
Technical computing term for a network device that consolidates multiple connections into a single uplink. Rare outside specialized IT contexts.
A single attachment concentrator is a device that consolidates multiple terminals into a single line.
Compound of 単一 (single), 接続 (connection), and the loanword コンセントレータ (concentrator). The exact derivation is uncertain; the term is a technical calque from English.