Low Profile Mezzanine Card for CPU Boards • M.2 SSD (NVMe PCIe x4 Gen3 or SATA 6G) • PCI Express® Mini Card Sockets (2 x Half-Mini or 1 x Full-Mini)

The S42-MC is a low profile mezzanine module for EKF CompactPCI® Serial CPU boards. It can accommodate either two PCI Express® Half-Mini Cards, or one Full-Mini Card (PCIe® Gen3 and USB 2.0), suitable e.g. for wireless applications such as WiFi or Bluetooth, or fieldbus I/O (CAN-FD). In addition, the S42-MC is equipped with an on-board M.2 PCI Express® (NVMe) or SATA mass storage module socket, for operating system installation. The S42-MC is suitable for EKF CPU carrier cards such as the SC4-CONCERTO or SC5-FESTIVAL, which are equipped with two HSE (high speed expansion) mezzanine connectors, for eight PCIe® Gen3 lanes. The CPU carrier board and S42-MC side card assembly basically requires 4HP front panel width. If SMA antenna or any other front I/O connectors (e.g. D-Sub for CAN bus) are required, EKF offers custom specific 8HP front panel design for the assembly.

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Ordering Information


  • Low profile mezzanine module for EKF CompactPCI® Serial CPU boards
  • Proprietary size 66mm x 95mm
  • Fits basically into the 4HP (20.32mm) envelope of the CPU carrier board
  • Typically delivered as a ready to use assembly unit (including CPU card)
  • Mounting position right (on top of a CPU board)
  • Dual PCI Express® Mini Card sockets (2 x Half-Mini or 1 x Full-Mini size)
  • Provides mass storage capability M.2 NVMe/SATA

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