This is the 7239th most frequent Japanese word.
下部
"下部" (かぶ, kabu) means "lower part" or "bottom section."
Here, '下部' refers to the lower part or section of an object, specifically the box.
箱の下部には秘密の引き出しがあります。
At the lower part of the box, there is a secret drawer.
In this sentence, '下部' indicates the physical bottom section of the server where cables can be attached.
サーバーの下部にケーブルを接続してください。
Please connect the cable at the bottom part of the server.
'下部' in this example refers to the lower region or area in relation to the painting.