 "291966-B21 HP Smart Array 641 Controller", "Null" "New 291966-B21 Controller Wholesale Price 291966-B21"
"Description:Smart Array 641 Ultra320 Controller with 64MB Cache 64-bit 133MHz PCI-X PC Board - Has one Internal 68-pin connector - Can add 128MB Battery Backed Write Cache (BBWC) ModuleSee optional BBWC BelowPart Number(s)Option Part# 291966-B21
Spare Part# 305414-001" 
 Specifications: Category Proliant Controller Sub-Category SCSI PCI-X Generation 641 Part Number 291966-B21 Products ID 8591 Board/Module Type Daughterboard Channels 1 Controller Type SCSI Drive Array (RAID) Drive Array Support RAID 0 1 5 10 Included Components Manual Installed Cache Memory 64MB Interface PCI, Ultra SCSI PCI, Ultra SCSI Maximum Cache Memory 128MB Maximum Number of Devices Supported 6 Maximum Transfer Rate 320MB/s System Type Linux, PC
 "Null" "631671-B21 HP Smart Array P420/2GB Controller"
 "Description:HP Smart Array P420/2GB FBWC 6Gb2-Ports Internal SAS ControllerPart Number(s) Option Part# 631671-B21 Spare 633538-001"
 Specifications: Category Proliant Controller Sub-Category Smart Array Generation P420/2GB Part Number 631671-B21 Products ID 461057 Manufacturer HP Product Type Storage Controller Host Interface PCI Express 3.0 x8 Controller Interface Type Serial Attached SCSI (SAS), Serial ATA/6 Data Transfer Rate 600MB/s Buffer Size 2GB RAID Level 0 1 5 6 50 60 1+0 Drive Support 64 x Logical Memory 2GB ECC DDR3 SDRAM Form Factor Low-Profile Plug-in Card