*Used, OWC Tested, 30 Day Warranty*
. (*) ATTO Technology Celerity FC-42ES 4Gb Fibre-Channel Dual-Channel PCI Express Host Adapter (*) ATTO Technology Celerity FC-42ES 4Gb Fibre-Channel Dual-Channel PCI Express Host Adapter.Features dual 4Gb Fibre-Channel ports w/optical connectors with speeds up to 800MB/sec per channel, fully compatible with 2Gb/1Gb.