This adapter by Delock can be connected to the Sub-D'9 pin connector of your device or system and use as a port saver. Thus, it prevents the Sub-D9 interface at applications with high mating cycles. Further, the adapter for special applications also serve as a mechanical extension of the sub-D9 ports. Specification https://elecena.pl/product/19002391/65249-adaptor-sub-d-9pin-plug-jack 2021-07-06 https://elecena.pl/product/19002391/65249-adaptor-sub-d-9pin-plug-jack 2021-10-27 https://elecena.pl/product/19002391/65249-adaptor-sub-d-9pin-plug-jack 2022-05-31 https://elecena.pl/product/19002391/65249-adaptor-sub-d-9pin-plug-jack 2022-10-15