Male Connectors are designed for use in backplanes.
Press Release Summary:

Original Press Release:
Type D Vertical Male Connectors For Backplanes From Sullins
Sullins Electronics, Corp., a world leader in the design and manufacture of connectors and interconnection systems, has added Type D vertical male connectors to its expanding line of 2 mm Hard Metric (HIM) and CompactPCI(TM) connectors. Specifically designed for the connection between cards and backplanes in electronic equipment, these 8+2-row x 25 position headers provide up to 220 signal contacts evenly distributed on a 2 mm grid. Furthermore, they are UL approved, and comply with the requirements of IEC 917 and IEC 61076-4-101 specifications for industry standard compatibility.
Engineered to provide design flexibility in addition to satisfying challenging electrical performance requirements in a broad range of telecommunication, computer and instrumentation applications, Sullins' 2 mm HM connectors offer superior mechanical characteristics. These high density interconnect products' press-fit design provides a highly reliable, gas-tight connection to the PC board along with an excellent quality/cost
ratio.
Featuring a multipurpose center that incorporates pre-alignment guides and accepts optional coding keys, the Type D connectors may be ordered in a variety of configurations including numerous standard pin lengths. Further making them one of the most versatile connectors available, they are offered non-shielded as well as in shielded versions for crosstalk control and EMI protection in high-speed signaling.