The Value S1017 is a DC power adapter for connecting equipment that uses different plug sizes. It has a 5.5 × 2.1 mm female connector at one end and a 4.0 × 1.7 mm male connector at the other, bridging those specific formats.
Its straight, non-angled body combines plastic and metal. The listing names modems and receivers as intended uses, making the adapter suitable when their DC connector sizes match these ends.
It is a compact connection accessory for setups where a device and its power lead use the respective connector sizes.