Adaptec 2820SA User Guide - Page 20
About the Adaptec 4800SAS, The Adaptec 4800SAS is a SAS RAID controller with these features
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Page 20 highlights
Chapter 3: About Your RAID Controller ● 20 About the Adaptec 4800SAS The Adaptec 4800SAS is a SAS RAID controller with these features: Mounting bracket Two 4-wide internal SAS connectors Alarm connector Mode 0 Flash connector Activity LED connector (top 2 left/right pins) One external SAS connector PCI-X connector Battery connector Bus compatibility PCI-X Maximum bus width 64-bit Maximum bus speed 133 MHz I/O processor clock frequency 500 MHz Standard cache 128 MB DDR21 Maximum number of disk drives 8 (or up to 128 with expanders) SAS cables included 2 (internal) Battery backup module Adaptec Battery Module 600 (sold separately-see page 18) Audible alarm Yes 1 256 MB also available Note: Although this controller has an onboard speaker, you can connect it to an internal speaker with these specifications: 3.0 V, 90.0 mA. The internal speaker is not required, as the onboard speaker volume is appropriate for most environments.
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