The XENPAK 10Gb/s form factor transceiver has become more of a historical module and has been replaced by the more compact SFP+/XFP as the 10Gb/s transceivers of choice. However there is still a requirement for these transceivers where an install base exists. GBICS.com continues to support XENPAK to the latest MSA standard and, as always, can be coded for a wide range of manufacturers.