Adaptec 2268300R manual About the Adaptec RAID, About Your RAID Controller, page, connectors

Chapter 3: About Your RAID Controller ● 25

About the Adaptec RAID 51645

The Adaptec RAID 51645 is a SAS RAID controller with these features:

I2C, CN2

I2C, CN3

Activity

CN0, CN1

CN6

1 external mini-SAS connector

Mode 0 Flash

Activity CN2, CN3

I2C, CN1

I2C, CN0

CN0
CN1	4 internal
	mini-SAS
CN2	connectors
CN3

Battery connector

Reserved

Ext. Alarm

Aggregate Activity

Form Factor	Full Height, Half Length
Bus compatibility	PCIe 1.1
PCIe bus width	x8
Data transfer rate	3 Gb/s per port
Phys (Unified Serial Ports)	20
Standard cache	512 MB DDR2
Connectors, Internal	4 mini-SAS x4 (SFF-8087)
Connectors, External	1 mini-SAS x4 (SFF-8088)
Maximum number of disk drives	20 direct-attached (or up to 256 with expanders)
Enclosure Support	I2C and SGPIO (Serial General Purpose Input/Output)
Onboard speaker	Yes
Battery Backup Module	Adaptec Battery Module 800/800T (sold separately—see
	page 19)