Jetway ADD-ON ADE4COMCB (4x COM) [Gen2]
[http://www.minipc.de/catalog/il/1580]
  24.95 EUR
incl. 19% VAT, plus shipping

Support: Specifications | Compability chart

Easily add four additional serial ports and a TPM 1.2 header. Compatible with selected Jetway motherboards that support the new Jetway Daughter Board Gen2 interface.

1. (2) internal RS232 headers, 12V/5V power selectable
2. (2) two external RS232/422/485 ports
3. (1) one internal TPM 1.2 Header
4. Proprietary Jetway Daughter Board Gen2 interface (PCI Express bus)